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• Where Does the Transmitter for the Custer Wireless LED Tow Bar Light Go
  The 4-pin round connector that includes the transmitter for the Custer Wireless LED Tow Bar Light # LIW-LDTL will plug into the 4-pin connector on your motorhome and then transmit the signal to the light bar. If you do not have a 4-pin round connector on your motorhome, you would need to add one. You can do this using the Pollak 4-Pole Round Wiring Socket # PK11404. Once you have the plug, you then need to route 16-gauge wire # 16-4B-1 to those pins into your current wiring. I have attached...
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• Installation of Trailer Lights with Red, Black, and White Wires to Traditional Trailer Wire Colors
  Red, black, and white wires are common on many tail light assemblies. When this is the case, you will have red as stop and turn, black as running light, and white as ground. So you will connect yellow to red on one side of the trailer and green to red on the other side. Then on each side you will connect white to your frame or mounting hardware, and brown to black for your running lights. I've attached a video of similar lights # STL69RB to assist. If you need additional wire, use #...
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• How Do Utility Trailer Lights Wire Up to the Trailer Wiring Harness.
  The red wire is the turn signal wire and will be run to the green wire of your harness if its the right turn signal side, and the black wire will run to the brown wire of your harness. The yellow wire from your harness will run to the left turn signal red wire. The brown wire will also run to the black wire of this light also. I attached an FAQ on trailer wiring for you to check out also.
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• Does the Brake Output Wire Get Attached to a 12 Volt Trailer Battery
  In order to rewire your trailer, I strongly recommend you use the Trailer Wiring 7-Way Upgrade Kit part # HS381-9000 with the Bonded 4 Wire part # 16-4B-1. This is going to ensure you have all the correct wire gauge and the junction box makes for a clean install as well as an easy way to troubleshoot if you ever have issues. In regards to the brake output wire part # 10-1-1, this will receive power from the tow vehicle's brake controller via the 7-way, not a battery during normal braking....
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• Why Does Trailer's Wiring have Two Brown Wires
  The brown (running light) wires all run to each other as they carry the same circuit. The reason there is two browns on the trailer side is because there are running lights that are on both sides of the trailer. Aside from that all the rest of the colors match with the white running to the trailer frame as a ground.
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• Wiring New 3 Wire Light on Trailer to Replace 2 Wire Light
  I can't be certain what the function for each of the wires are on your new trailer lights, but one of the three wires is likely for ground. Your old/existing trailer lights grounded through their mounting hardware, which is why they only had two wires and didn't need a third for a ground connection. If you turn the light assembly over, the functions for each wire should hopefully labeled somewhere. The most likely scenario is that the black wire is for ground, the green wire is for stop/turn...
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• Wiring New 4-Way Connector on Trailer with 5 Wires
  Going by the colors that you mentioned, it sounds like you have the typical set-up, green wire for right turn and brake, white wire for ground, yellow wire for left turn and brake, brown with green wire for right side running lights, and brown with yellow for left side running lights. If you are using a standard 4-flat connector like part # 18004, you will more than likely be able to connect color for color for the green, white, and yellow wires. As for the brown with green and the brown...
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• Wiring New Trailer Tail Lights to a Trailer with Only 2 Wires
  It sounds like your trailer tail lights you are using now ground through the mounting hardware. That would be why there are only 2 wires. One of those two wires is going to be for turn signal/brake lights and the other is going to be for running lights. To determine which wire is which you can plug the trailer up to a vehicle and have someone step on the brake pedal while you test the wires at the back of the trailer using a circuit tester such as # PTW2993. Whichever wire lights up the...
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• What Color Trailer Wires go to the Red, Black and White Taillight Wires
  This is a common question we get on lights like the LED Trailer Tail Light with License Bracket part # 328-003-81LBM1. The original colors you have are the traditional trailer wiring code so brown=taillights, red=turn/brake and white is ground. On your new light black=taillights, red=turn/brake and white=ground. You will connect brown to black, yellow to red and white to ground.
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• Trailer Taillight Recommendation to Replace a Bargman 91 Series Light
  The Bargman 91 series lights have been discontinued, but for a similar light you would want the # 30-92-002 and then for the side with a license plate bracket you would want the # 30-92-004. This is basically the same light that you have except it has round corners on the lenses instead of square corners.
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• Where is Trailer Running Light Fuse of 2018 Chevy Silverado
  The trailer running light fuse of your 2018 Chevy Silverado is in the number 15 slot of the fuse box under the hood of your truck. I attached a picture with the location pointed out.
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• Does Trailer Wiring Junction Box Need to Ground to Trailer Frame
  Hey Matt, running a ground wire from the junction box to the frame of the trailer won't hurt anything and can only really help. The ground of the box should be running to the ground circuit of the 7-way connector it is attached to. If the lights are working as-is though it sounds like your setup is totally fine currently. Does the trailer have brakes?
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• Standard Color Code for Wiring Simple 4 Wire Trailer Lighting
  You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a 7-way connector are as follows with the 4 colors of the 4-way connector remaining the same. White-Ground Brown-Tail/Running Lights Green-Right Turn/Brake - Remember green has an R in it Yellow-Left Turn/Brake - Remember yellow has an L in it Blue-Brake...
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• Parts Needed To Connect Lights From A Removable Trailer Extension To A 5th Wheel
  Hi Rick, I am aware of the Swivelwheel extenders, though not the Blue Ox ones, so I do have an idea of what you are attempting to achieve. It sounds like what you are looking to do should pose no problems at all and shouldn't be too difficult either, especially if you are familiar with wiring. You will, of course, need some butt connectors, wiring, and both trailer and vehicle side 7 Way connectors. I have a list of everything you would need listed out below, but I included two different...
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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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• Availability of Jacketed 4-Way Wiring From Roadmaster Diode Tow Bar Wiring Kit
  Hey Henry, we sell just he 4-way wiring that comes with the Roadmaster part # RM-15267 with the part # 16-4B-1 which we sell by the foot. How'd yours get damaged?
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• Troubleshooting Trailer Wiring That Stops Working When Headlights are On
  Your main problem is an insufficient ground for the trailer wiring. Try improving the connection of the main ground wire of the trailer wiring harness. Make sure it is attached to a clean metal surface. Or you can run all of the trailer wires back to the main ground. This is actually the ideal solution. But you can also check the current grounds for the lights to make sure they are making a solid connection to a clean metal surface. What you described is the classic insufficient ground...
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• Recommended Hitch for 5th Wheel Trailer to Tow Small Trailer with 4 Wheelers
  It sounds like you've got 70" between the two side frame stanchions on your trailer, so the Adjustable Width Trailer Hitch Receiver for RVs, 22" to 72" Wide # 13703 you were looking at is going to be the best solution. This hitch will work on box frame, C-channel frame, or I-beam frame trailers. If your trailer doesn't have a trailer connector on the rear you'll also need to add that. The best solution is to use Bonded 4-wire # 16-4B-1 , which is sold by the foot and the Tekonsha 4 Pole...
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• Troubleshooting 4-Way Wiring Harness Brake Lights Work But Running Lights Do Not Work
  The color code for wiring harnesses can vary between manufacturers, but the general standard for 4-way plugs is as follows: Green: Right turn/brake light Yellow: Left turn/brake light Brown: Tail/running lights White: Ground wire The running lights are on a different wire so they are not tied to the brake lights or turn signals. Since one function is not working I recommend checking your ground connection. Make sure it is secure on a clean, bare-metal surface. You can also try unplugging...
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• Troubleshooting Trailer Running Lights on Right Side Not Working
  If the running lights on your right (or passenger) side are working, but they are working for the other side then this indicates that you either have a short, some damaged wiring, or your running light (or just the bulb) on the left side needs to be replaced. Since trailer running lights on both sides use the same wiring you know that your trailer is getting the power because one side is lighting up. Start at your trailer plug and work your way back to your running light on the right...
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• Why Does 4-Pin Trailer Wiring Have 5 Wires
  Your 4-pin/5-wire wiring harness is what is called a "wishbone" type which simply means that there are two separate running light wires, one brown and one pink. This allows a separate running light wire for each side of the trailer which saves you having to run a jumper wire from one side of the trailer to the other. We offer lots of wiring items just like this, such as # A35W42B, # A20WB and # A10-4225VP, which happen to use two brown wires instead of one brown and one pink. The functions...
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• Parts Needed To Install A Brake Controller On A 2023 Freightliner Cascadia
  You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part # HA100400C. However, we mostly recommend just using an electric brake controller since they tie into the stop light switch of the tow vehicle, making it irrelevant what kind of brakes it has. For an electric brake controller I recommend the Tekonsha Prodigy P3 # 90195. A very solid, user friendly brake controller....
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• Trailer Wiring Using Wishbone or Y-Harness 4-Way Trailer Connector
  The 20 Ft 4-Way Trailer Wiring Harness - Wishbone Style - 30" Ground # A20WB simply has two wires that connect to the running light pin of the 4-way. There isn't a 5 wire we carry in spools or by the foot, but we do carry the Bonded 4 Wire - per foot # 16-4B-1 and then you can add Primary Wire - 16-Gauge - White - per Foot # DW02359-1 for the additional running light wire. You can connect these to a 4-way flat connector using the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer...
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• Running Light Fuse Location 2018 Chevrolet Silverado 2500
  The number 15 fuse in the engine bay fuse box is responsible for the trailer parking lamps. For future reference, the owner's manual will tell you where all the fuses are located and what they do.
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