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Expert Answers about Wiring


  • Converting 5-Wire Separate Wiring on Motorcycle Trailer to Combined 4-Wire Setup
  • The easiest way to convert your Time Out trailer to standard combined 4-Way setup is to use the Curt 2-to-3 Converter # C56196. You will first just need to cut off the existing 5-Way connector on the trailer. Then on the output side of the converter the green wire will connect to the green wire on the trailer. The yellow wire on the converter will go to the yellow wire on the trailer and the red wire will go to the red/blue wire on the trailer. The brown running lights wire won't go through...
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  • How Does MiroFLEX LED Trailer Light part # MCL48AB Wire to be a Turn Signal and Running Light
  • Yes, you are absolutely correct. To wire up the Miro-Flex LED Trailer Side Marker Light # MCL48AB to work as a blinker and running light you would need to run the stop/turn signal wires to the red wires, the running lights to the black wires and the ground to the white and it will work like it is supposed to.
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  • Wire Color Functions of Trailer Taillight that Use Red, White and Black Wires
  • The white wire of the light is the ground circuit, the red wire is for the running light circuit and then the black wire is for the stop/turn circuit for each side of the trailer. On the left side the black wire gets ran to the yellow wire and then on the right to the green.
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  • How to Install New Trailer Tail Light with 3 Wires
  • Most likely, the red wire on your new tail light is for the turn signal, the black wire is for the tail light and the white wire is for ground. I do recommend testing the wires on your trailer for function, but typically the yellow wire will be for the left turn signal and the brown wire will be for the tail lights. If this is correct, the red wire from the light will connect to the yellow wire on the trailer and the black wire will connect to the trailer's brown wire. The white ground...
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  • How Does the Optronics Trailer Light # STL79RB Wire to Trailer Wiring
  • The wiring of the Optronics Trailer Light # STL79RB that you listed are: The white wire, with the mounting eye, is a ground wire that needs to be connected to the white wire of your trailer wiring. The black wire would be connected to your running lights and is the lower intensity illumination. This should be run to the brown wire of your trailer wiring as this is usually the tail light circuit. The red will be wired to the brake/turn wire and is for the higher intensity illumination....
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  • How Does Trailer Light with One Wire Connect to Two Wire Wiring
  • Trailer lights that only have one wire ground through the mounting bracket instead of through a second wire. So to wire what you have now to a single wire you'd run the power wire to it and then run the ground wire to the mounting hardware and you'd be set.
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  • Wire Color Chart Diagram for Installing Hopkins Multi-Tow 7-Way Blade and 4-Way # HM11141144
  • I attached a diagram that shows how to match all of the wire colors of the Hopkins Multi-Tow 7-Way Blade and 4-Way Flat Trailer Connector # HM11141144 to the wire colors on your 2017 GMC Canyon.
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  • What Wire Size Is Needed For 12 Volt Power On Truck To Operate Interior Lights On Camper
  • The wire gauge of the blue wire on the Hopkins Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, part # 47515, will be too small to be able to use as a 12 volt power source. You will need to use a 10 gauge wire on your truck to run a 12 volt power wire to your trailer connector, along with a 40-amp circuit breaker. I would recommend to install the Hopkins Adapter 4 Pole to 7 Pole and 4 Pole, part # 37185, on your truck. This Hopkins adapter will plug into your 4-flat connector on your truck...
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  • Where Do Wires of Adapter 37185 Wire on 2006 Ford F-150
  • For your 2005 Ford F-150 there is the brake controller wiring already present on the frame rail of the truck. Follow the 4-way trailer connector wires from the trailer connector to the front of the vehicle. These wires connect to a factory plug along the frame rail, usually on the driver's side, between the back tires and the rear bumper (Figure 2). The factory plug should be mated to another connector which has wiring that continues back toward the bumper. There are more wires coming...
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  • How To Wire 3-Wire Fuel Transfer Pump To Vehicle 7-way Connector
  • Since your transfer pump has 3 wires that means it has a static ground. The green wire will get grounded to the body/frame, the white wire will need to be connected to the ground on the 7-way connector, and the black wire will get connected to the 12v power pin on the 7-way connector. You can do this by using the 7-way connector # A7WCB, 10 gauge wire (sold by the foot) # 10-2-1, and heat shrink butt connectors # DW05745-5. You will connect the black wire to the 1 o'clock pin on the back...
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  • Determining Trailer Light Assembly Functions for Wire Colors Yellow, Black, and White
  • On the light assemblies the yellow wire will be the stop/turn circuit and the black will be the running light. So you have the white wires already figured out as the ground so on the right side of the trailer you'd run the green wire to the yellow wire of the light assembly and on the left side you'd run the green. You'd then run the brown wire to the black wires on both sides and you'd be set.
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  • How to Wire the Hayes Blackbird Brake Controller to a 2009 GMC Sierra
  • I attached a picture that has a diagram that details which wire from your 2009 GMC Sierra gets wired to the Hayes Blackbird Brake Controller part that you referenced. You will also need the universal install harness part # HA81789-HBC that you also referenced. The red wire of your truck goes to the black wire of the controller. The dark blue wire of truck goes to blue of controller. The light blue or orange wire goes to the red wire of the controller. The white wire of the truck goes...
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  • How to Wire Up New Trailer Wiring Connector on Truck with Non-Standard Wire Colors
  • Vehicle manufacturers rarely follow the color codes that are used for standard trailer wiring applications so if all you have is a bundle of wires that you need to wire to a 7-way like the part # HM40975 your best option is going to be to test all of the wires with a circuit tester like part # PTW2993 so that you can determine all of the wiring functions and then wire accordingly to the 7-way wiring diagram I attached to this page.
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  • How to Wire Gustafson RV Vanity Light part # 277-000324 to RV
  • In order to wire the Gustafson RV Vanity Light part # 277-000324 to an RV you will first want to obtain a few items: wire stripers, wire nuts, and electrical tape. There are two wires coming from the back of each light on this vanity light for a total of 6 wires. One is for the ground and the other is for the power. You will want to begin by attaching one wire from each light to one another. It doesn't matter which wire you choose as they are not polarity specific. You can use the wire...
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  • Adapter for Truck Wiring To Wire Third Brake Light of Camper Shell
  • What you can do is use the converter box part # 118158 wired to either you taillight wiring or trailer wiring and you'll have a dedicated stoplight circuit on the red wire. If you ground the white wire and then run the green wire to the right turn circuit and the yellow to the left turn on the input side of the box the red wire on the output side of the box will have just the stoplight.
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  • Comparing How To Wire Single Wire and Two Wire LED Lights In Box Truck
  • 2 wire LED lights and single wire LED lights will get wired pretty similarly. On a single wire light like the Optronics LED Trailer Clearance and Side Marker Light w/ Reflex Reflector - 6 Diodes - Amber Lens # MCL44AB1 you were looking at the wire is for power, and the light is grounded through the mounting hardware. On a 2 wire LED light like the 60" LED Lights you have the white wire will get grounded to your box truck, and the other wire is the power wire. You will need to make sure...
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  • Why Does my 4-Way Connector Have 2 Wires Ran to One Prong for the Tail Light Circuit
  • It sounds like you need an Optronics wishbone wiring harness, part # A35W42B. This 4-Way has a prong that has two wires that come out of it. The reason some 4-Ways have two wires coming out of one port is because that prong represents the tail light functions for both sides of the trailer. So one wire would run to the tail lights on one side of the trailer, and the other wire would run to the other. I attached a video below that shows this product being installed onto a trailer and explains...
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  • How to Install a Brake Controller in a 2007 Jeep Grand Cherokee with Factory 7-Way
  • The 2007 Jeep Grand Cherokee is not pre-wired with a brake controller port for installation of a brake controller. To install a brake controller on your 2007 Jeep Grand Cherokee with a factory 7-Way you will need to do a little hard wiring. The only wire Jeep provides is the electric brake output wire that goes back to the 7-Way trailer connector. This wire is probably a light green wire that is behind the in cab fuse box. It will connect to the blue wire on the brake controller. You...
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  • Explaining Wiring Connections on Yellow and Brown Wire of Tow Ready Tail Light Isolating Diode
  • I found the portion of the install video of the # TR118821 that you mentioned and to clarify what he's doing he's splicing in the wiring from the kit to the wiring of the vehicle in a way that allows the vehicle wiring to still function like it needs to and also allow the converter box to get the signal it needs to from the circuits. So he's cutting the vehicle wiring and putting the vehicle wiring and the converter box wiring in one end of the butt end connector and then the other end...
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  • Can LED Light Strips w/ Wiring Harness # DI44ZR be Wired to Trailer with Brown and Blue Wire
  • You'll need to use a circuit tester like part # PTW2993 to determine which of the wires you have in your cabinet is the power circuit and which is the ground so that you can wire up the LED Light Strips w/ Wiring Harness # DI44ZR but yes, what you are wanting to do is definitely possible. On this light assembly the black is the ground wire and the red is the power wire.
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