How to Wire a Toyota Tundra with 4-Pole Connector to a Trailer with a 6-Pole Connector

Question

Question:

I have a toyota tundra truck with a 4 pole connector white, brown, yellow and green which I am trying to hook up to my E-Z trailer with a 6 cable connector yellow, yellow/brown, green and green/brown. I am looking for a 4 pole connector to come out of the truck but with 6 cables that I can connect the trailer with. I already tried to connect the standard 4 cables but it is very confusing.

asked by: carol e

0

Expert Reply:

It sounds to me like you have two running light wires on your trailer. The green and brown and yellow and brown wires are most likely right and left side running lights so both of these should most likely attach to the brown wire terminal which corresponds to the brown wire in the 4-Pole connector on your truck. This would mean that you only have 5 poles in the trailer connector that are used. These could be the left turn/brake, the right turn/brake, brown running lights, ground and electric brakes, power for the trailer or reverse lockout if the trailer has surge brakes. You do not have to use all six poles in the connector to make the wiring work properly, you just need to wire the functions to the correct circuits on the vehicle. Use a circuit tester, item # PTW2993 if needed to determine which wires power each function needed.

I would use the Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring, item # 37175, to wire the vehicle for the 4-Pole connector that you already have on the truck and a 6-Way connector that matches the trailer. You simply plug the 4-Pole connector into the connector on the back of the adapter and the lighting functions are complete from the vehicle side. You then need to wire the remaining circuits needed for the trailer functions. If the trailer has electric brakes then the blue wire will provide power from the brake controller to the center pin in the connector and the red wire is for auxiliary power to the trailer from the vehicle battery. You will need to use a 40 amp circuit breaker, item # PK54540 inline with the power wire to run this circuit to the vehicle battery.

expert reply by: Robert G

0

Answer 1

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Answer 2

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 3

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 4

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 5

I have a solution for you, but you will need to cut off your existing plug and re-wire this to a new 4 way connector. Your current trailer plug appears to have wires for the left (yellow) and right (green) turn signal, brown wires for the running…

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Answer 6

Yes, we do have the complete kit with all the wires and lighting you will need to rewire and set your trailer up with new lights. We have two options depending on the amount of side marker lights you want. The first is the LED Combination Trailer…

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Answer 7

Yes, you just have to remove the old lights, match the wires and mount the new ones. Please note, that it is usually not a good idea to mix LEDs and incandescent lights, so if you have have side markers or other lights on the trailer, make sure you…

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Answer 8

If you have a 4-way flat connection on you RV and a 4-way round connection on your flat towed vehicle, then I recommend using a the Custer Trailer Connection Adapter, #ADP001. This adapter used with a wiring harness like #18045 will allow you to…

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Answer 9

I can offer you a solution, though a 7-round to 4-round adapter is not available. What you will need to do is create your own by wiring a 7-round trailer end connector, #PK11700, and 4-round vehicle end connector, #RM-910030-1. I recommend going with…

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Answer 10

The RoadMaster 4-Wire Connector #RM-910030-1 has a 1-3/4" center to center spacing for the mounting holes and would require a at minimum a 7/8" wide hole to fit the body of the connector through.

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Answer 11

I have a solution for you. However, we do not have an adapter to fit your 4-pin round connector on your trailer. Because of the rarity a 4-way round connector, I recommend either cutting off the 4-way round and attaching a 4-way flat, or splicing a…

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How to Wire a Toyota Tundra with 4-Pole Connector to a Trailer with a 6-Pole Connector

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