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Expert Answers about Chevrolet Vehicle Lights


  • Adapter Recommendation for German Vehicle Towing Trailer with LED Lights
  • For a 7-way adapter designed for German vehicles towing LED lighted trailer to prevent the bulb out error message we have the part # C57003. For an adapter that plugs into a 7-way and then provides a 4-way we have the part # C35FR.
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  • Where to Find Relay on 2018 Nissan Pathfinder for Trailer Running Lights Circuit
  • Sounds like the trailer running light circuit is not working on your 2018 Nissan Pathfinder and you are looking for the harness that needs a relay to activate it. Trailer running lights not working with certain Nissan vehicles is a common problem with an easy fix. There is a relay for the trailer running light circuit that is located in the fuse box (in the cab). If that relay is missing or no longer functions then it can be replaced with one of the blue relays in the Curt Relay Kit #...
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  • How to Determine if Flat Towing 2005 Dodge Ram 1500 Requires Brake Lite Relay
  • Here's how to determine if your 2005 Dodge Ram 1500 will require you to install the Brake Lite Relay # RM-88400: Is a Relay Required? To determine if a brake light relay is needed to properly wire your vehicle to be towed, answer the following questions. Are you using a supplemental braking system that depresses the brake pedal in your towed car? No - You do not need a brake light relay. Yes - You may need a brake light relay. Continue on to the next question. Do the brake lights on...
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  • Recommendation on Wiring a 2015 Ford F-150 for Flat Towing
  • On your 2015 Ford F-150, we have a couple options for you to choose when wiring your vehicle up for flat towing. The first option and most labor intensive would be to use the Roadmaster 7-Wire to 4-wire Flexo-Coil Kit # RM-15247. This kit includes the diodes and wire that will allow you to hard wire into your Ford's lighting wiring harness. You then would run the wiring to the front of the truck and install the 4- wire round plug. The 7-way to 4-way Flexo-Coil will connect your motor...
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  • Can I Use the Bargman 30-85-002 to Replace the Tail Lights on my 1993 Winnabego warrior motorhome
  • Yes. You can use the Bargman Triple Tail Light - 5 Function # 30-85-002 which has 5 wires, on the 4 wire system of your 1993 Winnebago Warrior. To do this you would just need to splice out the turn signal wire on your vehicle to allow you to provide power to the top two lights on the fixture and allow them to function properly. For reference, the green wires are going to be for the taillights and the running light circuit, the black wires are going to be our stop and turn signal, the white...
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  • Does the Gustafson RV Ceiling Light 277-000400-331 Run Off a 12v Power Supply
  • Yes, you can use the Gustafson RV Ceiling Light # 277-000400-331 to replace your existing 12v light in your RV. This Gustafson light also runs on a 12v power source and uses low amp draw LED lights in a 10" diameter glass dome, so it will be a great replacement for your old 12v light.
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  • Why Does Trailer Wiring for a 2016 Mazda CX5 Have to Run to Vehicle Battery
  • The reason the Curt Custom Fit Vehicle Wiring # C56310 has a power wire is to protect the delicate tail light wiring circuits of your vehicle from being overloaded. The Curt Trailer Harness # C56310 that you referenced uses your tail light circuits as signal wires and then draws the power to illuminate the tail lights of your trailer directly from your vehicle battery through the battery wire of the box. Not doing this will void the warranty of the kit. I attached installation instructions...
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  • Is there a Special Trailer Tail Light Bulb for Turn Signals, Brake, and Running Lights on One Bulb
  • Trailer tail lights have a combined circuit for turn signals and brake lights and a separate circuit for the running lights. Because of this type of system you would not be able to get all the functions on a single circuit. That type of wiring is fairly complex and is primarily found on German vehicles (Volkswagens in particular) but not all. But even on trailer stop, tail, and turn signal lights the functions are all on one bulb, sometimes 2 depending on the light. But there are still...
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  • Replacing Incandescent with LED Bulbs in Roadmaster Tail Light Wiring On 2015 Jeep Grand Cherokee
  • You can switch over to LED lights by using the Roadmaster LED Bulbs # RM-152-2 . This will allow you to use the existing wires that you've already run with the Roadmaster Tail Light Wiring Kit # RM-155 and add LED tail lights in the place of the incandescent bulbs.
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  • Best Parts Needed to Flat Tow 2019 GMC Yukon XL Denali
  • You are off to a really great start with the Roadmaster Nighthawk tow bar part # RM-676 and base plate kit # RM-523179-4 that you referenced as well. For lighting/safety cables, locks, and covers for the tow bar we have the Roadmaster Falcon All Terrain kit part # RM-9284-2 which comes with all of that as one part number. The diode kit that comes with this allows you to splice into the taillight wiring so that your RV controls the vehicle taillights and does not require drilling into...
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  • Adding a 7-Way Trailer Connector to a 2005 Ford Expedition with Factory 4-Way
  • There isn't a harness similar to # 118247 that fits your 2005 Ford Expedition with 4-Way connector but I do have a solution that will allow you to add a 7-Way fairly easily and retain the use of the 4-Way as well. You will need connector # 37185. The 4-Way you have will plug into this adapter. The white wire grounds to the vehicle frame. The other wires will connect to tow package wiring under the vehicle. Follow your 4-Way forward under the vehicle to where it connects to another harness....
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  • Replacement Trailer License Plate Light For Incandescent Light Sealed Inside Lens
  • Thank you for the images. It appears you have a Mini Trailer License Plate Light # LP91CB which is 2-1/2" long by 1-3/6" tall. You will have to replace the light as an assembly since the unit is sonically sealed to prevent water from getting in. You will be able to use the LED Trailer License Plate Light # LPL91CPG as a replacement if your light does match the dimensions above. The LED will last longer and draw less power from your vehicle.
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  • Demco Universal Towed Vehicle Wiring Kit for 2021 Jeep Wrangler
  • I would be happy to help make a wiring recommendation for your 2021 Jeep Wrangler. I recommend the Demco 4-Diode Universal Towed Vehicle Wiring Kit w/ 7-Wire to 6-Wire Coiled Connector item # DM9523010-54. This complete wiring kit lets you connect your RV's tail, brake, and turn signal lights to your towed vehicle's lighting system. The diodes prevent electrical feedback and the damage it can cause to your car's electrical components.
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  • What are the Correct Replacement Bulbs for Optronics Trailer Lights # ST6RB and # ST7RB
  • It looks like you have Optronics Lights # ST6RB and # ST7RB. For either of these lights, the correct replacement bulb will be # A1157B that you have referenced and # 30-90-194 for the side light. Trailer lights are a 2-wire system. This means that they have combined stop and turn signals on the same bulb. If the lights do not blink with the turn signals, you may need to change the running light wire with the stop/turn signal wires. Use a circuit tester like # PTW2993 to test the trailer...
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  • How to Find Reverse Light Circuit for Wiring Up Back Up Alarm on Vehicle
  • You'd have to track the wiring that leads to the reverse lights of the 2015 Toyota Highlander and then test all of them with a circuit tester like part # PTW2993 until you find the circuit that only carries voltage when the reverse lights are on. That would be the correct circuit to use.
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  • Will Replacement Fog Lights Fit 2009 Chevrolet Avalanche
  • We do offer replacement fog lamp bulbs for your 2013 Chevrolet Avalanche in white LED # P250001W.
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  • Replacement Light Bulbs To Convert To LED Light
  • To replace your 921 bulbs with LEDs, I recommend the Diamond Vehicles LED bulb # DI29VR. This is a warm white colored directional bulb with a lumen output of 175. This LED bulb for overhead applications has built in surge protection and a 5-year warranty.
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  • Replacement Parts For Westin Molded Lighted Running Boards On 2005 Ford F-350 King Ranch
  • If you have the Westin Molded, Lighted Running Boards # 27-0025-1215 on your 2005 Ford F-350 King Ranch you will need Replacement Lenses And Housings # 27-9904, and the Replacement Light Housings # 27-9902. If you have different running boards on your vehicle just let me know and I would be happy to recommend the parts you are looking for.
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  • Replacement 7-Way and 4-Way for 2003 GMC Sierra With Factory Tow Package
  • So it sounds like you spliced into the factory trailer wiring harness of your 2003 GMC Sierra's factory 7-way, or factory tow package harness. Doing that would cause the issues you are having so what you need to do is replace the harness with the Replacement Custom Multi-Tow 7-Way and 4-Way Trailer Connectors # 30955. This will work without anything else so long as you didn't try and splice into the wiring AFTER the truck's factory plug. If you spliced the wires after the plug you will...
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  • Relay Location for Activating Running Lights of 2013 Nissan Frontier
  • Trailer running lights not working with certain Nissan vehicles is a common problem with an easy fix. There is a relay for the trailer running light circuit that is located in the fuse box (in the cab). If that relay is missing or no longer functions then it can be replaced with one of the blue relays from the Curt Relay Kit # C57000. The relay of the running light circuit on your 2013 Nissan Frontier is in the relay harness behind the passenger floorboard kick panel. If you check out...
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