installing New Light Bar With Only One Wire On Boat Trailer

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Question:

My new light bar is a single wire connection but the existing wiring on the trailer has a solid brown and white wire. Would it matter if I connected the new bar to the existing trailer wire?installing new light bar on boat trailer

asked by: Kevin

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Expert Reply:

The existing wires on your boat trailer are for running lights and ground. The single wire replacement light should be connected to the brown wire and the white wire should be attached to the mounting screw since the unit must ground through the mounting hardware and frame. I recommend testing it for function before the complete installation.

The Truck and Trailer Identification Light Bar - LED - Submersible - 9 Diode - Red Lens # MCL97RPG is a great example of this and you can see the way it is grounded in the attached video for proper function to the frame bracket.

expert reply by: Jason S

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Answer 1

The Putco Red Blade LED Tailgate Combination Light Bar part #P92010-60 which is the lightbar I recommend for your trailer has LED lights so the amp draw will be very minimal. The reason that this is important is because the total amp draw for each…

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Answer 2

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 5

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 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

The only difference between 7-Way Utility and 7-Way RV is the color of the wires. The pin outs are the exact same so either would work just fine with the other. If you check out the picture I attached you'll see that the functions are all the…

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Answer 8

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…

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Answer 9

Yes, 14 gauge wire seems too small. I would go with 10 or 12 gauge. For 10 gauge you can use #10-1-1 and for 12 gauge use #12-1-1. These wires are sold in increments of 1 foot. So if you needed 20 feet of wire you would enter 20 in the quantity box.…

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Answer 10

It's a wire color difference but not a function difference on the pins of the 7-way. The difference comes from the fact that the two different styles are representative of two different areas that uses trailers. Traditional is usually seen on…

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installing New Light Bar With Only One Wire On Boat Trailer

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