Trailer Wiring Replacement Recommendation for Trailer that Has 4-Way and 5 Wires

Question

Question:

My trailer wires got chewed trailer has 5 wires my 4 door jeep has 4 what can I do tofix it

asked by: Barry

0

Expert Reply:

Sounds like your trailer has a wishbone 4-way installed on it which means that two of the wires go to the same circuit (running lights) and the rest run to individual pins of the 4-way.

For that we have the part # A35W42B which is 35 feet of wishbones 4-way for you to use to replace what you have. The two brown wires run to both of the running light pins of the connector you have. Then the rest wire where they need to go.

If you are unsure where each circuit goes on your trailer's wiring you can use a jumper wire from a 12 volt car battery to put voltage on all of the pins and see which circuits light up.

expert reply by: Jameson C

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Answer 1

It sounds like you have a wishbone wiring harness install on your trailer. A regular 4-way wiring harness has 4 wires from the back of the connector, 1 for left turn/brake typically (yellow), 1 for the right turn/brake typically (green), 1 for the…

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Answer 2

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 3

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 4

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 5

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…

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Answer 6

Typically 4-way wiring consists of 18 and 16 gauge wires. For a 4-way that has all 16 gauge wire you would want the Wesbar 4-Pole Flat Connector #W787264. The part #HM38138 uses 18 gauge for all wires but the white that uses 16 gauge.

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Answer 7

Yes, it is possible to convert your 7-way on your trailer to a 4-way. To replace the wiring on your Coleman 10 Foot pop up camper we offer wiring adapters that allow connection of different formats of trailer wiring. The best option to change the…

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Answer 8

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 9

Most trailer wiring that runs to trailer lights is 16 gauge. I would rather people use 14 or 12 unless the lights are LED which draw considerably less. But for most people 16 gauge works just fine for basic trailer lighting. If you are planning on…

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Answer 10

Did you have a 4-pin connector that had 5 wires or was it a 5-pin connector? There is a big difference since you normally see a 5-pin connector on a boat trailer with the 5th pin used for an electric reverse lockout solenoid on a brake actuating…

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Answer 11

The 4-way on your trailer is what's known as a wishbone connector like part #A35W42B. Two of the wires are the running light circuit which is a little easier to install since you can run one down each side of the trailer. This way you don't…

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