How to Make an Adapter to go From a 4-way Flat Vehicle to a Separate 6-Way Round Trailer

Updated 08/05/2013 | Published 08/03/2013

Products Featured in This Question

Adapter 6-Pole to 4-Pole with Built-In LED Tester and Cover

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Curt 2-to-3 Tail Light Converter for Towed Vehicles w/ Incandescent Tail Lights

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Question:

Hi, My trailer wiring diagram states my 6 plug round male plug needs an adapter utilizing all 5 outer circle plugs. 1-lights 2-left turn 3-right turn 4 brake lights 5-ground, center- back-up lights. I need an adapter for a flat 4 prong plug. I do not need the back-up lights center plug. My vehicle is a 2000 Volkswagen Winnebago Rialta Motor Home.

asked by: Dennis G

Expert Reply:

So it sounds like your trailer has separate circuit tail light harness meaning the brake lights are separate from your turn signals and your motorhome has a combined circuit 4-way.

I believe the easiest way to accomplish towing this setup would be to wire up a tail light converter like the Curt adapter # C56196 to separate your tow vehicles tail light signal.

The method I will recommend for this will basically give you an adapter to allow your trailer to be towed by motorhome, but then if you want to tow a different trailer with just a 4-way you could just simply not use the adapter.

First thing you need is to take a trailer side 4-way like the Hopkins Endurance 4-Way Flat Trailer Connector # HM48110 and then wire it by function to the # C56196. You would be able to just match up the colors from the # HM48110 to the input side of the # C56196.

Now from the output side of the # C56196 you will want to wire in a Bargman 6-Way # 50-86-007. Since your 6-way seems to be wired differently than standard you will want to wire the connector up by function to match the 6-way of your trailer.