Replacing 5-Way on Trailer that Has 8 Wires

Question

Question:

Looks for 5 pin boat trailer harness with 8 wires part #53108c

asked by: Jim S

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Expert Reply:

A standard 5-way like the part # HM47910 would work great to replace what you have. You'd just run all of the white wires that you have (all three) to the single white wire of this connector, both the brown wires to the single brown of the connector, and then match the rest of the wires by color and you'd be set.

expert reply by: Jameson C

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Answer 1

There is not going to be a 5 flat that has 8 wires; the functions of the 8 wires are likely ground, running light circuit (split into 2 wires at the plug), left turn, right turn, brake lights (possibly split at the plug), and output to reverse…

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Answer 2

On a 7-Way trailer connector the brake lights and turn signals are on the same circuits. The pins in the connector at the 3 o'clock and 9 o'clock positions are the turn signal and brake light circuits. On the tow vehicle side use a circuit…

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Answer 3

A 4-way trailer connector will have four functions which means it will also have four wires for the exception of wishbone harnesses. These four functions are ground, tail light, right turn, and left turn. The ground function will usually be…

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Answer 4

On a 5-Way trailer connector, usually found on boat trailers, the pin on the end furthest from the ground pin is used on an electric reverse lockout on the trailer coupler. This is so when you put the vehicle in reverse, it will single a solenoid on…

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Answer 5

You can use a standard 5-pole trailer connector, you'll just need to wire it a certain way. The #HM47900 you referenced is the vehicle side connector, you need the trailer side connector like part #HM47910, which would wire as shown in the…

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Answer 6

It is hard to say exactly how much of the black wire insulation was cut off of the 7-Way Round RV Style Trailer Connector #A7WCB, but after watching the video and having done this myself before, it looks like Rick cut off about 2 inches of the black…

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Answer 7

We definitely have what you need to replace the 5-Way connector on your boat trailer, but there's not going to be a pre-made 5-Way harness that includes 8 wires. As you mentioned the most you will likely find is a wishbone harness like #A25W5B…

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Answer 8

For a replacement 5-way we have the Hopkins 5-Way part #HM47913 which will work great. This even has circuit testers for each wire so that you can easily make sure everything is working properly. Wiring configuration on #HM47913: Green: right turn…

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Answer 9

Your current 5-way has two wish boned circuits. One on the running lights and for the reverse light circuit which is why two wires run to each pin. All you'd have to do is run both of the trailer wires of each circuit to the single wire of the…

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Answer 10

You will not need a brake controller to tow a boat trailer with surge brakes. Surge brakes are actuated by an actuating coupler on the trailer, so all you will need is a trailer wiring harness for the lights and an electric lockout, if your actuating…

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Answer 11

What you have is a 5-way with a double wishbone, which means it is likely a double wire for marker lights as well as a double ground. You can replace your 5-way with another wishbone-style but it does not need to be a double wishbone with 7 wires,…

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Answer 12

The SAE STIAP2 04 DOT number you provided is a DOT approval number, which states that the lens is compliant with DOT regulations. Because of that, that number isn't typically a good identifier for finding a replacement lens. However, in this…

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Replacing 5-Way on Trailer that Has 8 Wires

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