Trailer Light Adapter 4 Wire To 5 Wire

Trailer Light Adapter 4 Wire To 5 Wire. I have one on my trailblazer because it is five wire and my boat trailer is four wire. Mount one light to either side of the trailer in the same location as the old lights, taking note of the requirement for the numberplate light.

Reese Towpower 7-Way to 4 or 5 Flat Adapter with LED ... (Callie Watts)

Installing seamlessly into your trailer wiring harness, CURT Trailer Wiring Adapters take the mystery out of hooking up your And, by converting different types of wiring, they get power from your rig to your trailers lights, signals and other gadgets. Trailer wiring testers can help ensure that towing is done in a safe and legal manner. It shouldn't affect the lights if wired properly.

In my case I googled it.

The trailer wiring diagram shows this wire going to all the lights and brakes.

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I have one on my trailblazer because it is five wire and my boat trailer is four wire. What's the fifth wire going to? The top countries of supplier is China, from which the percentage.