Expert Answers about Kia Trailer Wiring

• Determining Function Of Trailer Taillight Wires on Horse Trailer Taillights.
• Since yellow, green, and black are not standard trailer taillight wires, we will need to do a little more digging to find the functions of the different wire colors. To determine the function of the trailer taillight wires, you will want to trace the wires into the taillight housing. The wire that makes contact with the outside of the bulb socket is the ground wire. Once you've determined which wire is the ground wire, you will want to ground this wire and apply 12V power to the other...
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• How Does Trailer Lighting with Black and Red Wire Attach to Standard Trailer Wiring Colors
• For most trailer lighting applications the if the light has a red and black wire the red wire represents the stop and turn circuit and the black represents the running light circuit. If there isn't an additional white wire that would indicate that the assembly grounds through the mounting hardware. So to wire this to standard trailer wiring you'd run the red wire on the assembly on the passenger side of the trailer to the green wire and the red wire on the driver side of the trailer to...
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• How to Wire Third Brake Light on Trailer
• To add a third brake light to your trailer I recommend Optronics Sealed, Streamline LED Trailer Third Brake Light, 1-Function, # STL80RB. This can be wired to your trailer using the Tow Ready Vehicle to Vehicle Taillight Converter, part # 118158. To install the tail light converter # 118158 on your trailer you will connect the wires on the input side of the converter, white (ground) to the trailer frame, green wire to green wire on your trailers wiring, and yellow wire to yellow wire on...
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• Wiring a 1992 Mazda B2600 With a 4-Way Trailer Wiring Harness
• Your 1992 Mazda has a 5-wire system, and the trailer has a 4-wire system. If you do not have a 4-Way trailer connector on the truck, you will need to install one. The 4-Pole Hardwire Kit with Converter, item # 119178KIT will convert the vehicles 5 wire system down to a 4-wire system for trailer lighting. You will need to identify the taillight circuits on the vehicle with a circuit tester, item # PTW2993 if needed. Once you have the proper circuits identified you will connect the white...
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• Wiring Wishbone Connector To Trailer With 4 Wires
• The reason for four wires on your trailer is that one of the wires will normally be spliced toward the rear of the trailer and will run to both sides of the trailer for the running lights. I have attached a photo of a wishbone connector. You can see that the two wires highlighted with arrows are sharing the same pin on the connector. The green wire will connect to the right turn signal, the yellow wire to the left turn signal and the white wire will be the ground. Typical trailer wiring...
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• Wiring New 7-Way Trailer Plug on Trailer That Used Wishbone Harness on 4-Pole
• The easiest way to wire in a 7-way plug on your trailer that currently has a 4-pole wishbone harness is to use a junction box like # 38656 from Spectro. Your trailer that has a wishbone harness has two separate running light wires (dual brown wires) that allow you to connect both sides' running lights without need to run a running light jumper wire between the two sides of the trailer. The junction box will provide a handy and weatherproof connection point to wire together the trailer's...
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• Wiring Single Wire Clearance Lights on an Enclosed Trailer
• You will need to use a circuit tester, item # PTW2993 if needed, to test the wires exiting the trailer to figure out the wiring configuration with the trailer hooked up to the truck and the running lights on. You will probably find that you have taillight power on one of the green wires and no power on any of the other wires. In this case you would wire the two green wires to the power wire coming from the clearance light. You would then need to wire the two white wires coming from the...
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• How to Test Trailer Wiring to Determine Function Handled by Each Wire Color
• The wire colors and number of wires on your trailer don't quite match up to what is common but we can help you sort it all out. The best way to start is to identify what function each trailer wire powers by connecting them one at a time to a well-charged battery. First, find the wire that connects to the trailer frame since this is the ground. Usually a white wire is ground but it is always possible that alternate wire colors were installed at some point in the past. Whichever wire connects...
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• How To Wire A Third Brake Light On A Trailer
• To get a third brake light on your trailer I would recommend the Optronics Sealed, Streamline LED Trailer Third Brake Light, 1-Function, part # STL80RB. This can be wired to your trailer using the Tow Ready Vehicle to Vehicle Taillight Converter, part # 118158. To install the tail light converter # 118158 on your trailer you will connect the wires on the input side of the converter, white (ground) to the trailer frame, green wire to green wire on your trailers wiring, and yellow wire to...
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• How To Wire A 7-Way Trailer Connector With A Wishbone Trailer Wiring Harness
• The best way to wire a 7-way plug on your trailer that has a 4-way wishbone harness is to use a junction box like part # 38656 from Spectro. The wishbone harness has two separate running light brown that connect both sides of the trailer running lights without the need to run a jumper wire between the two sides of the trailer. The # 38656 junction box will give you a nice way to wire together the trailer's leads and the 7-way plug like Hopkins part # H20044. You would use the junction...
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• Installing 2-Wire Lighted License Plate Bracket on Trailer
• When wiring a 2-wire license plate bracket, such as the Optronics LED # LPL55CB, you are correct that the white wire will be for ground and the black wire is used for the running lights. The white wire from the bracket should be attached to a clean, bare metal surface on the trailer frame for a secure ground. As you mentioned, the brown wire on your trailer is most likely the correct wire to tap into for the black wire on the bracket, but you will want to verify this by testing the wires...
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• Installation of Bulldog Powered-Drive Kit for Single-Speed Jacks # BD1824200100 on a Trailer
• The Bulldog Powered-Drive Kit for Single-Speed Jacks, part # BD1824200100, should be wired to a trailer battery. The four wires in the wiring harness are white, black, red, and green. The green and white wire from the pigtail will go to the red and black wire from the battery. The red wire from the pigtail harness will go to the positive terminal of the trailer battery and the black wire will go to the negative terminal of the trailer battery. The problem with connecting it to your trailer...
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• How to Wire Electric Brakes on a Tandem Axle Trailer
• If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other wire should be grounded either to the trailer frame or to the main trailer ground wire. It does not matter which wire is used for power or ground because they are not polarized. If the trailer wiring is running down the left side of the trailer,...
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• Wiring Instructions for Optronics Standard Trailer Light Kit # TL29BK with 7-Way Trailer Connector
• To install the Standard Trailer Light Kit # TL29BK using the Trailer Wiring Junction Box # 38656 and the 7-Way Molded Connector # 54006-059, you will follow these wiring instructions. Starting with the trailer tail light wiring kit: The white wire will be for ground. The brown wire is for running lights. The green wire is the right turn signal and stop lights and the yellow wire is the left turn signal and stop lights. Then from the trailer 7-way connector wiring: The green wire is...
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• Availability of a Trailer Wiring Diagram for a 2012 Honda Goldwing and 1999 Escapade SE Trailer
• Wiring your motorcycle to tow your motorcycle trailer will require some testing and investigation of the lighting configuration on your trailer. First, check the lights on your 1999 Escapade SE trailer. If the trailer has separate lights or bulbs for the turn and stop lights then the trailer will have a 5 wire connector. In this case you will need to contact Honda for wiring for the trailer, that will protect the motorcycles circuitry. If the trailer has combined stop and turn signals...
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• How To Wire a Trailer Taillight with 5 or 6 Wires When There Is Only 4 Wires on the Trailer
• The four wires on your trailer wiring harness likely have the following functions: Yellow - Left Stop/Turn Green - Right Stop/Turn Brown - Running Lights White - Ground In regards to hooking a taillight up to these wires, you would simply match up the functions of the wires on the taillight to the functions of the wires on the trailer. The taillight should have come with a wiring diagram which tells you which each color wire represents. If you have different color wires than the above...
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• How To Wire A 4-Flat Plug On A Trailer With Two Running Light Wires
• It looks like your trailer is wired with a wishbone style harness like the # A20WB. This harness uses two brown running light wires to allow you to wire the trailer running lights without running a jumper wire from one side of the trailer to the other. To connect your new 4-wire plug, you will splice the two brown wires on the trailer together, and connect them to the brown wire on the 4 flat plug. Then it will simply be yellow to yellow, green to green and white for ground.
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• How To Wire 7-Way Trailer Connector On Trailer for Factory Plug
• In order to wire up the trailer to hook up to a factory 7-way trailer connector you can simply install a new end, the 7-Way Molded Trailer Wire Connector part # H20042 is what I recommend. I can't tell you what wire colors to hook where as not all trailers are the same but likely the green is right stop/turn, yellow is left stop/turn, brown is running light, white is ground, blue is brake output, black is battery charge, and yellow is reverse. If you don't have all functions you could be...
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• How to Wire Five Lights On a Simple Trailer that Possibly Tilts and has Extra Ground Wires Ran
• It sounds like you have a 4 wire harness that has had extra ground wires ran the length of the trailer to solve a ground issue. One possibility is that the trailer is a tilting style trailer and grounding to the frame at the rear could have presented an issue at some time. Usually I fix this type of issue with a short heavy gauge jumper wire, # 10-1-1, from the tongue portion of the trailer frame to the tilting portion of the trailer frame, but running a wire the length of the trailer will...
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• What is the Function of the Yellow/Brown Wire on a Trailer
• Your yellow/brown wire most likely ties into the brown running light wire. Typically, when a trailer has a green/brown wire and a yellow/brown wire, they are both used for the running light circuit. The green/brown wire is ran down the right side of the trailer and the yellow/brown wire is ran down the left side of the trailer for the tail lights and marker lights. This prevents the need from running jumper wires across the trailer for the running lights. If your trailer is setup this way,...
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