What Circuit Should the Red Wire of the RM-732 Get Run To

Question

Question:

I just received my Roadmaster 732, 3-2 wire converter-Regarding attaching the wire to the brake on the truck - is that the blue wire for the trailer brakes? Or do I find one of the wires that goes to the tail brake light? 2001 Chev 3500 thanks

asked by: Tom W

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Expert Reply:

The blue wire that runs to the trailer brakes would not be the stop light circuit to use for wiring up the Roadmaster Converter part # RM-732 that you have. You will need to find a circuit that carries just the brake lights. I am assuming that since you bought this converter your tow vehicle has separate brake lights from turn signals so you would just need to test the wires going into your taillight assemblies for the circuit that just carries the stoplight signal.

If your 2001 Chevy 3500 has a 7-way wiring harness at the rear of the vehicle then it already has the taillight circuits combined and the # RM-732 would not be needed since this converter is designed to go from a separate circuit to a combined circuit. If you are looking for a converter to go the opposite direction you would instead want the part # 118158.

expert reply by: Jameson C

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Answer 1

You can test the converter on the motor home using a circuit tester such as #PTW2993 or a meter if you have one. I have included a link to a video on the testing procedure. It could also be that corrosion or moisture has built up in the motor home or…

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Answer 2

A 4-way with seven wires has two wires for each side of the taillight circuit, and you can use a standard 4-way, like you mentioned, the Wesbar 4-Pole Flat Connector #W787264. I have added a link below to a video review for you to take a look at, as…

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Answer 3

We normally recommend the converter #RM-732 to convert a separate turn signal circuit setup to a combined. This would work well for you and be what we would recommend. We haven't had any issues with voltage on this converter damaging anything.

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Answer 4

There are adapters that go from a 4-round on a vehicle to a 4-flat on a trailer but not vice-versa, but we do have a simple solution for you. All you need to do is cut off your trailer's 4-round and wire in a trailer-side 4-flat, the Wesbar…

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Answer 5

Diodes are only for situations where you are using the towed vehicles factory tail lights and wires. When using the Roadmaster Tail Light Wiring Kit, #RM-155, it provides dedicated tail lights and wires so diodes are not needed. I have attached a…

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Answer 6

We have a dual 4-way harness that has the trailer side adapter on each end that may work for you. It is part #RM-300150-00. This adapter is 6-ft long. We do not have a rigid adapter with a male connector on both ends.

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Answer 7

Yes, the Roadmaster Brite-Lite Converter, #RM-732, will help convert the 3 wire signal from your motor home to the two wire signal to you flat towed vehicle. The Brite-Lite converter can also increase the light intensity of your turn and brake…

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Answer 8

What you need is a converter to take the separate turn and brake light circuits and combine them. You will need converter #RM-732. It will take the separate signals and combine them so on the output side you have a green wire for right turn and brake…

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Answer 9

The Commercial truck plug will have the functions shown with the stop lamp separated from the turn signals as you stated. so you will need the Roadmaster Brite-Lite Wiring Converter #RM-732 to combine those signals for you to make them compatible…

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Answer 10

Yes the Roadmaster taillight converter part #RM-732 is the correct adapter you'd need to combine the separate taillight circuits of your tow vehicle so you could connect them to your trailer properly.

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Answer 11

We do have 4-Way flat to 4-Way flat extension adapters available, however they do not feature a coiled wire like you mentioned in your question. I recommend taking a look at the Hopkins 4-Pole Flat Wiring Extension #HM48235. This extension measures…

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Answer 12

You will need the Roadmaster Brite-Lite Wiring Converter item #RM-732. The Brite-Lite converts a 3 wire electrical system on a towing vehicle to a 2-wire system on the towed vehicle.

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