User`s Manual - Parking Sensor Kits
Contents
1. 2 Yellow 3 Green on Zone distance 3 3 2 3ft Stop Zone 3 Green 2 Yellow 1 2 Red on Fastest Actual 1 2 Red 2 Yellow 3 Green on 2 3 1 0ft distance Stop Zone 3 Green 2 Yellow 2 Red on Continuously 0 0 2 Red 2 Yellow 3 Green on 1 0 0 0ft Using the Beeper Audible Alert for Beeper Only System F2R4B F4R4B The beeper beeps faster as vehicle gets closer to obstacle and sounds continuously when vehicle is within 1ft 0 3m from the obstacle Chart 2 Beeper Only System F2R4B F4R4B Obstacle Distance Alert Zones and Audible Alert Alert Zones Obstacle Distance Beeping Audible Alert Safe Zone 6 6 4 9ft Starting to beep at 4 9ft Safe Zone 4 9 3 3ft Beeping Fast to Faster Safe Zone 3 3 2 3ft Beeping Faster to Fastest Warning Zone 2 3 1 0ft Beeping Fastest Stop Zone 1 0 0 0ft Beeping Continuously e Note 1ft 0 3m Troubleshooting for LED System F2R4L FARAL Problem Cause Solution Display doesn t light up when reversing or parking forward with braking 1 Display not plugged in 2 No power to the control box 3 Faulty display 1 Check display connection 2 Check control box power connections to see if Black wire is grounded properly Red wire gets 12V from ACC or ignition Yellow wire gets 12V from reverse light Blue wire gets 12V from brake light 3 Replace the display Display light up but system is not detecting2. Parking Sensor System For the rear sensors back your vehicle slowly about 3 miles per hour to approximately 4 9 ft 1 5m from a flat vertical surface such as a wall Continue to back up slowly and check the performance against Chart 1 LED System or Chart 2 Beeper Only System For the front sensors do the same test while forward parking slowly with foot braking Note have somebody watch the vehicle while you are doing the test 5 Using the Display for LED System F2R4L F4R4L The display has a built in beeper audible alert with On Off Switch There are seven 7 LED Lights 3 Green 2 Yellow 2 Red on each side of the two digit distance display Fig 4 The color LED lights indicate both orientation of obstacle and Safe Warning Stop zone Chart 1 Chart 1 LED Display System F2R4L F4R4L Orientation of Obstacle Distance Display and Audible Alert Viewing from the Front of the Display Obstacle LEDs on the Left Side LEDs on the Right Side Distance of the Display pene cee of the Display Responding to Rear Sensor A B Alert Displa Responding to Rear Sensor C D or Front Sensor E F p ay or Front Sensor G H Safe Zone No LEDs on No No LEDs on gt 6 6ft Safe Zone Starting to light up at 4 9ft Starting to Starting to light up at 4 9ft 6 6 4 9ft beep at 4 9ft Warning 1 3 Green on Fast Actual 1 3 Green on Zone distance 4 9 3 3ft Warning 3 Green 1 2 Yellow on Faster Actual 1
3. and 2 pin mini connector Cable Length Front Sensor 26 2ft 8 0m Rear Sensor 8 2ft 2 5m 1x LED Display with built in beeper On Off switch and 8 pin plug with 19 7ft 6m attached cable for LED System F2R4L F4R4L 1x Beeper with 8 2ft 2 5m attached cable for Beeper Only System F2R4B F4R4B Features 1x Control Box 1x Double Sided Self Adhesive Pad for affixing control box to vehicle 1x Power Cable for Control Box including four wires red black yellow and blue with 4 pin connector Length 3 3ft 1 0m 1x Drill Bit Hole Saw 21mm 2 or 8x Plastic Sensor Spacers with wedged thickness for non vertical bumpers 1x User s Manual in English Front and Rear Parking Sensor System to provide good coverage of both front and rear end of vehicle 2 or 4 front and 4 rear in bumper sensors to give the look of factory installed system Rear sensors are activated while reversing and front sensors are activated while forward parking with foot braking Beeping faster when getting closer to obstacle Designed for cars SUVs 4x4s Mini VANs and small trucks Limited 12 Month Warranty Specifications Beeper Only System F2R4B F4R4B Audible alert beeper without display for easy installation without cluttering the dash LED System F2R4L F4R4L Wired LED Display with Built in Audible Alert Beeper with On Off Switch Seven 7 LED Lights on each side of the display to indicate both orientation
4. any obstacle Sensors not connected Faulty display Faulty control box Check sensor connections Replace the display Replace the control box System showing distance but no beeping or system beeping but no distance display Beeper switched off Faulty display Faulty control box Switch on the beeper switch on back of the display Replace the display Replace the Control Box System is not detecting any obstacle in front System has no 12V from brake light Make sure the blue wire gets 12V from brake light System is not detecting any obstacle in rear System has no 12V from reverse light Make sure the yellow wire gets 12V from reverse light Wrong LEDs light up Sensors are plugged into the wrong Sockets at the control box Install the sensors in the bumper as labeled in Fig 1 amp 2 and plug sensors as labeled on the sensor wires into their corresponding sockets at the control box Fig 4 Display constantly shows 0 0 or beeps continuously 1 Object within 1 ft is detected 2 Holes drilled for sensors are too tight especially if it is a metal bumper 3 Faulty sensor s 4 Faulty control box 1 Unplug all sensors and then plug back in one sensor at a time to find out which sensor is causing the problem Check if anything within 1 ft of the sensor may be detected Adjust angle of the sensor Refer to 5 Installing the Sensors for details 2 Carefully e
5. tax charged by the customs in your country Customer Service and Technical Support For customer service and technical support visit our Web site as listed below then click on the link Contact Us Spare and Replacement Parts To order spare and replacement parts for your system visit our Web site as listed below then click on the link Replacement Parts All Rights Reserved HY Technologies Milpitas California USA http parkingsensors net 10 The specifications and features of the system Terms amp Conditions Return Policy and Warranty included in this User s Manual are subject to change without prior notice All Rights Reserved HY Technologies Milpitas California USA e http parkingsensors net Made In China 11
6. Ground it Pit L5 L8 L7 L6 L5 L Fig 2 Mounting Height and Position Front Sensors H 750 80cm 20 32 L5 6 15cm 2 6 L6 L7 L8 or L6 L8 0 3L L7 0 4L NS es Cp Sensor Center Line Parallel to Ground 50 80cm 20 32 Ground Fig 3 Mounting Height and Angle of Sensors LED DISPLAY SYSTEM F2R4L F4R4L Control Box Jj ema Control Box Ki Power Plug Front Sensors H G F E 0000 _ Sensor Plugs Display Plug Ex pau NZL a A 9 E LED Displ a gt gt isplay TEE 0000 8 5 88 p Camm BBimmmgu B8 c D g AR Se SE NS Rear Sensors EO amp Z Beeper On Off Switch 8 z on Back of Display Fig 4 Control Box Display Sensors and Wiring peu NZL BEEPER ONLY SYSTEM F2R4B F4R4B Front Sensors F E QOO0 Sensor Plugs Control Box a Cir ET III Beeper Plug Control Box Power Plug ui enig lt lt o oc e a S 9 sp p OOOO 8 5 S E xi a A B c D o F 8 se Rear Sensors oc amp a Beeper 8 E Fig 5 Control Box Beeper Sensors and Wiring All Rights Reserved HY Technologies Milpitas California USA 2 http parkingsensors net How the System Works The Parking Sensor System determines obstacle distance by measuring th
7. User s Manual Front and Rear Parking Sensor System 2 or 4 Front and 4 Rear In Bumper Sensors With Wired LED Display and Built in Beeper LED System F2R4L F4R4L 2 or 4 Front and 4 Rear In Bumper Sensors With Beeper Only Beeper Only System F2R4B F4R4B For Cars Mini VANs 4X4s SUVs and Small Trucks Note for 6 Sensor Parking System If you purchased a 6 sensor system F2R4B or F2R4L it is actually our 8 sensor system shipped with two 2 front sensors The two front sensors shipped with the 6 sensor system are labeled as E and H Depending on your specific vehicle or application they can be plugged into either the control box s ports E and H or ports F and G corresponding to the same sensor locations on the front bumper of vehicle as shown in Fig 2 in the User s Manual Install the two front sensors to bumper locations E and H for better corner coverage of the front bumper or install to bumper locations F and G for a balanced front bumper coverage as shown in Fig 2 in the User s Manual Two additional front sensors can be ordered at our online store and added to the 6 sensor system to make it a 8 sensor System as the control box is 8 sensor ready FE C 1809001 All Rights Reserved HY Technologies Milpitas California USA e http parkingsensors net Front and Rear Parking Sensor System Included in the Box 6 or 8x Sensors in bumper type with attached cable
8. ay be equally spaced if possible or symmetric to the center of the bumper Fig 1 and 2 c For better corner coverage the outer two sensors may be mounted about 5 9 0 15m from the corner of the bumper Fig 1 and 2 d Adjustments to the sensors mounting positions may be needed for your specific vehicle Note The bumper surface for mounting the sensors should be as flat and vertical as possible Use the plastic sensor spacers with wedged thickness included if the surface of the bumpers is non vertical For exact color match you may have the sensors spray painted For best results spray paint no more than two thin coats not to be applied with brush or touch up And it is recommended 4 that you have the sensors professionally painted by an auto body shop Note although the sensors can be spray painted for exact color match to your vehicle sensors painted void warranty on them a Start with the front sensors and then the rear sensors Refer to Fig 1 and 2 for the recommended mounting height and position of the front and rear sensors Work under the front and rear bumpers to check the internal structure of them before marking the positions for drilling holes Remove the bumpers if the view is blocked With chalk or marker mark the position of sensors on the bumpers Make sure that the sensors can be pushed all the way in and that you can feed the wires through Note If you have a 6 sensor system install the two front sensor
9. ce the display in place temporarily without securing it to the top of the dashboard Note After testing the system is working properly secure it with the included self adhesive on the bottom of the display b Run the display wire from the top of the dashboard down to the floor and then to the control box in the back of the vehicle hide the wire with the cables of the front sensors under the door or weather trim c Insert the 8 pin connector of the display into its 8 pin socket labeled DISP on the front side of the control box 4 Installing the Beeper for Beeper Only System d Find a place for the beeper near the middle of the vehicle on the driver side Place the beeper in place temporarily without securing it to the vehicle Note After testing the system is working properly secure it with the included self adhesive on the bottom of the beeper e Run the wire of the beeper to the control box in the back of the vehicle hide the wire under the carpet or weather trim Insert the 2 pin connector of the beeper into its 2 pin socket labeled DISP on the front side of the control box 5 Installing the Sensors IMPORTANT a To avoid false alert from the system detecting the ground and for best obstacle detecting results the suggested sensor mounting height is between 20 to 32 0 5m to 0 8m above the ground and the face of the sensors need to be vertical or slightly upward angled Fig 3 b Horizontally the sensors m
10. cle is within 1 ft or 0 3m from an obstacle Note the front sensors may continue to work for 20 more seconds after foot brake is released Tools Needed 21mm drill bit include drill tape measure chalk or marker wire stripper vinyl electrical tape cable wire ties voltage meter screw driver set pliers Note Use a bi metal 22mm drill bit not included if drilling through metal bumpers For metal bumpers holes drilled need to be slightly larger than diameter of sensors Installation and Wiring IMPORTANT a Read this manual thoroughly before proceeding to installation You can also have the system installed by a professional installer such as your local auto mechanic auto electrician car stereo store b Turn off the engine and ACC during installation c Double check that all wiring is correct before powering on the system d During installation avoid flatting perforating cutting and extending the wires of sensors to reduce unnecessary signal loss e Never pull the sensor cables too hard or sensors may not work properly or at all 1 Installing the Control Box a Find a flat and clean surface for the control box inside the vehicle near driver s side taillight assembly but away from it for least 1 ft As the control box is not water proof type you need to mount the control box to a location that is protected from water Keep it away from areas of high heat high humidity direct sunlight and electromagnetic dev
11. d on the sensor wires or it may cause the system not to work properly Attach sensor wires to the vehicle body with cable wire ties so that they will not get in the way of any moving parts and there are no loose wires hanging down 1 Plug all sensors into their corresponding sockets at the control box b Q oO Q Q Fh o pi u k Note Only use Sensor A B C and D as rear sensors and Sensor E F G and H as front sensors Don t switch the front sensors with the rear sensors or it may cause false alert such as continuous beeping and 0 0 display LED System only Installing Sensors in Metal Bumpers If you have a continuous beeping or false alert problem after installation of the system unplug all sensors from the control box and then plug back in one sensor at a time then test to find out which specific sensor s is causing the problem After you find the sensor that is causing the false alert please check if the sensor hole in the bumper is too tight as instructed below Pull the sensor out of its hole in the bumper for about 0 5 inch tape it to the bumper so it faces upward a little bit and see if the false alert stops If yes then the hole drilled for the sensor is a little bit tight which can apply pressure on the sensor and or cause resonance and make the system give false alert If this is the case then carefully enlarging the hole a little bit with a small round file should solve the problem Testing Your New
12. e time needed for the ultrasonic wave emitted by a sensor to reach an obstacle and for the sensor to receive the ultrasonic wave reflected from the obstacle Given the speed of the ultrasonic wave the system can then calculate and display the distance between the sensor and the obstacle To provide good coverage for both front and rear end of vehicle the system comes with 6 or 8 sensors 2 or 4 front and 4 rear sensors To have the look of factory installed system the 6 or 8 sensors are in bumper type to be installed in the front and rear bumpers by drilling holes through the bumpers Controlled by 12V from the back up light the rear sensors are activated when the vehicle is put in reverse Controlled by 12V from the brake light the front sensors are activated when parking driving forward with foot braking For LED System F2R4L F4R4L it comes with a wired LED display which shows the distance of an obstacle in front or rear of the vehicle displayed as 0 0 if obstacle is within 1 ft or 0 3m Seven 7 LED Lights Green Yellow Red on each side of the distance display indicate both orientation of obstacles and Safe Warning Stop zone The audible alert beeper is built in the display with On Off switch For Beeper Only System F2R4B F4R4B it comes with a beeper audible alert only for easy installation without cluttering the dash The system beeps faster as vehicle gets closer to an obstacle and sounds continuously when vehi
13. eeper Faulty control box AUN 1 Check beeper connection 2 Check control box power connections to see if Black wire is grounded properly Red wire gets 12V from ACC or ignition Yellow wire gets 12V from reverse light Blue wire gets 12V from brake light 3 Make sure sensors plugged in securely 4 Replace the beeper 5 Replace the control box System is not detecting any obstacle in front System has no 12V from brake light Make sure the blue wire gets 12V from brake light System is not detecting any obstacle in rear System has no 12V from back up light Make sure the yellow wire gets 12V from reverse light Beeps continuously x Object within 1 ft is detected 2 Holes drilled for sensors are too tight especially if it is a metal bumper 3 Faulty sensor s 4 Faulty control box 1 Unplug all sensors and then plug back in one sensor at a time to find out which sensor is causing the problem Check if anything within 1 ft of the sensor may be detected Adjust angle of the sensor Refer to 5 Installing the Sensors for details 2 Carefully enlarging sensor holes a little with a small round file 3 Replace the sensors s 4 Replace the control box Beeps even there is no obstacle behind or in the front 1 Ground is detected Sensors angle is low Sensors installed too low mounting height below 1 6ft 2 Holes drilled for sensors are too tight
14. especially for a metal bumper 1 Unplug all sensors and then plug back in one sensor at a time to find out which sensor is causing the problem Adjust angle of the sensor Refer to 5 Installing the Sensors for details 2 Carefully enlarging sensor holes a little with a small round file For more installation related questions and Frequently Asked Questions FAQs with answers and product photos visit our Web site at http parkingsensors net All Rights Reserved HY Technologies Milpitas California USA http parkingsensors net 8 Warnings e Detection Range of the System The parking sensor system detects obstacle by emitting ultrasonic wave and receiving reflected ultrasonic wave from an obstacle Different materials have different reflection and absorption of the ultrasonic wave and the actual detection distance varies depending on what materials an obstacle is composed of Human skin and clothes actually absorb the ultrasonic wave and can only reflect very small portion of the ultrasonic wave back to the sensors hence the system may detect human skin and clothes within a much shorter range compared to other materials Drivers in these situations should pay more attention while parking their vehicles To avoid collision with obstacle because of the inertia of vehicle while backing up parking keep your vehicle speed at about 3 miles per hour and stop the vehicle immediately once you hear the continu
15. ices Place the control box in place temporarily without securing it to the vehicle as you may need to adjust the location of the control box while wiring Note After the system is working properly use the double sided self adhesive pad included to secure it to the vehicle Insert the 4 pin plug of the power cable for the control box into its 4 pin socket labeled PWR on the front side of the control box See Fig 4 LED System or Fig 5 Beeper Only System o Q Important Notes for Installing the Control Box Don t mount the control box near or under the dash or in the cab of a truck The control box is designed to be mounted near the rear end of a vehicle near taillight assembly to avoid interferences from the engine which may cause false alert such as continuous beeping and 0 0 display LED System only If Installing the System to a Truck as the control box is not water proof type you may need to first mount the control box in a small water proof metal or plastic box not included with the system then fix it to a location near the rear end of the truck 23 gt Note Some lights turn signal brake reverse stop lights may emit interferences that can affect the signals the control box receives therefore cause the system to give false alert After installation if you experience false alert caused by turn signal light or brake reverse stop lights try to put the control box as far as possible away at least 1 ft from the taill
16. ight assembly or turn signal brake reverse stop lights 2 Wiring the Control Box Refer to Fig 4 LED System or Fig 5 Beeper Only System If necessary remove the taillight assembly and use a voltage meter to verify the wires found Strip 1 2 of the wires found for connecting wires together a Locate the 12V and the negative wires from the reverse light near the taillight assembly b Connect the yellow wire of the power cable to the 12V wire of the reverse light Connect the black wire of the power cable to the negative wire of the reverse light Locate the 12V wire from the brake light near the taillight assembly Connect the blue wire of the power cable to the 12V wire of the brake light Locate the 12V wire from a ACC accessory power outlet or ignition under the dash Connect the red wire of the power cable to the 12V wire of the ACC or ignition h Wrap all connections with vinyl electrical tape Note if there is no ACC 12V wire in the rear end of the vehicle then the red wire needs to be extended then connected to ACC or Ignition 12V wire found in the front end of the vehicle run the extended wire from the control box to the front end of the vehicle and hide it with the cables of the front sensors and display under the door or weather trim c d e f g 3 Installing the LED Display for LED System only a Find a place for the display on top of the dashboard where the driver can see it easily Pla
17. ilicone applied void the warranty on the sensors Items with seal if any broken case if any opened repaired modified or disassembled by customer void the warranty Items for return must be in new uninstalled unused re sellable condition including the original packaging manufacturer s containers documentation warranty cards manuals and all accessories Re packing and Re stocking fee Unopened returns are subject to a 1596 re stocking fee Opened returns are subject to a 25 re packing and re stocking fee Returns which are damaged or have parts missing not caused by shipping process may be subject to a greater re stocking fee or charged at their full retail prices and deducted from refund amount Shipping and Handling fee is not refundable Returns are not acceptable if the packaging is not in its original condition or the item has been used or installed International orders are not returnable If a domestic or international shipment is refused by the customer or customs and returned back to us a 15 restocking fee will apply less the shipping cost and any other fees incurred if any to the customer It is the customer s responsibility to make all arrangements with us for refused shipments You are responsible for the shipping and handling cost to mail the defective parts returns exchanges and items for Warranty back to us and for us to ship them to you You are responsible for the customs duty tariff or import
18. l responsibility of use of such system s or parts Returns exchanges can only be accepted if they are within 15 days of your receipt of your order Before your return you must e mail our Customer Service to get your Return Merchandise Authorization Number RMA for your return to be processed We offer 12 month limited warranty on our products from date of purchase After an item s is are returned to us it they will be checked and tested by our technical support If the item s is are found as defective in materials and workmanship and qualified for our warranty they will be either repaired or replaced for free shipping cost excluded If they are found as not qualified for our warranty then you need to pay for the repaired or replacement items at their full retail prices see below Items with the following conditions are not qualified for our warranty The warranty excludes defects or damage due to misuse abuse or neglect This warranty does not cover any cost incurred in inspection installation and repair services involved Items with the following conditions are not qualified for our warranty Customer can cut or extend wires or cables for more flexible installations but please note that items with wires or cables cut void the warranty on the items 9 Customer can paint sensors to match his vehicle color but please note that sensors painted by customer void the warranty on the sensors Sensors with any type of glue or s
19. nlarging sensor holes a little with a small round file 3 Replace the sensors s 4 Replace the control box Display shows a distance and beeps even there is no obstacle behind or in front 1 Ground is detected Sensors angle is low Sensors installed too low mounting height below 1 6ft 2 Holes drilled for sensors are too tight especially for a metal bumper 1 Unplug all sensors and then plug back in one sensor at a time to find out which sensor is causing the problem Adjust angle of the sensor Refer to 5 Installing the Sensors for details 2 Carefully enlarging sensor holes a little with a small round file All Rights Reserved HY Technologies Milpitas California USA e http parkingsensors net 7 Troubleshooting for Beeper Only System F2R4B F4R4B Problem Cause Solution No beeping when reversing or parking forward with braking Beeper not connected properly No power to the control box Faulty beeper WN Check beeper connection to control box Check control box power connections to see if Black wire is grounded properly Red wire gets 12V from ACC or ignition Yellow wire gets 12V from reverse light Blue wire gets 12V from brake light 3 Replace the beeper NA System is not detecting any obstacle in front and rear Beeper not connected properly No power to the control box Sensors not connected Faulty b
20. of obstacles and Safe Warning Stop zone Distance display in feet or meters FCC CE 1809001 Approved Operating Voltage DC 10 5 16V Detecting Range Front 1 0 3 3 ft 0 3 1 0m Rear 1 0 4 9 ft 0 3 1 5m Measuring Error 0 1 ft or 0 1m Sensor Detection Angle 60 Sensor Diameter 0 83 in 21mm Sensor Length 0 71 in 18 mm Detection Response Time 300ms Audible Alert when obstacle within 1 0 3 3 ft 0 3 1 0m in front 1 0 4 9 ft 0 3 1 5m in rear Ultrasonic Frequency 40Khz Audible Alert Volume 60 db Maximum Power Consumption 4W Current Consumption 100 300mA Operating Temperature Range 20 70 C Dimensions of the Control Box WxDxH 3 9 x 2 8 x 1 0 10 0cm x 7 2cm x 2 5cm LED System F2R4L F4R4L Dimensions of the LED Display WxDxH 5 2 x 1 2 x 1 1 13 4cm x 3 0cm x 2 8cm Beeper Only System F2R4B F4R4B Size of the Beeper diameter 1 6 4 0cm thickness 0 7 1 7cm For reference only and may be changed without prior notice 8 SENSOR SYSTEM WIRING SENSOR MOUNTING HEIGHT AND POSITION LJ o o o A B C D J Wy l Ground L1 L2 L3 L4 L1 lt 4 E Fig 1 Mounting Height and Position Rear Sensors H 50 80cm 20 32 L1 6 15cm 2 6 L2 L3 L4 or L2 14 0 3L L3 0 4L OO H9 G o ti E9 j H J
21. ous beeping This is because even if you have applied brake your vehicle will still go for some distance inertia before it comes to a complete stop Because the back up parking system detects obstacle by emitting ultrasonic wave and receiving reflected ultrasonic wave from obstacle the system may fail to give both visual and audible alert if an obstacle has smooth ball shaped or sloped surfaces as such surfaces may not reflect ultrasonic wave back to the sensors at all Drivers in these situations should pay more attention while parking their vehicles e In heavy falling rain or snow the system may give alert as falling rain or snow may be detected as obstacles Keep surface of sensors clean of snow mud dirt and other debris Terms amp Conditions Return Policy and Warrant IMPORTANT the parking sensor systems and parts sold and distributed by us are only devices used to assist a driver while parking They should not be considered as a substitute for driver responsibility when operating a vehicle No warranty as to operational efficiency is granted We don t guarantee or assume liability for collisions or damages that take place when parking your vehicle with use of the parking sensor systems or parts We will not be liable for any claims actions suit proceedings costs expenses damages or liabilities arising out of use of the systems or parts By placing an order for the parking sensor system s or parts customer agrees to take ful
22. s to bumper locations E and H for better corner coverage of the front bumper or install to bumper locations F and G for a balanced front bumper coverage as shown in Fig 2 Drill the holes through the bumpers at the marks with the 21mm drill bit included Note if drilling through metal bumper you will need a bi metal 22mm drill bit not included Holes drilled in metal bumpers need to be slightly larger than diameter of sensors If necessary smooth the sharp edge of the holes with a polishing head or small round file Run the sensor wires into the holes drilled Push the sensors into the holes When pushing the sensors only apply pressure at the edges not on the middle of the sensor to avoid damage to the sensor element The sensors are tapered for a snug fit Adjust the sensors for non vertical bumper surface by using rotating the plastic sensor spacers with wedged thickness included For front sensors run the sensor wires from the front bumper into the inside of the vehicle through the existing wiring holes or rubber grommet in the fire wall and then to the control box in the back of the vehicle hide the wires under the door or weather trim For rear sensors run the sensor wires from the rear bumper into the trunk or inside of the vehicle through the existing small vent or rubber grommet in the rear of the trunk or vehicle and to the control box Note Do not cut the excess sensor wires to avoid signal loss Never pull to har
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