Where Does Blue Wire of 7-Way Adapter part # 37185 Need to Attach

Question:

Can I use the chmsl wire to connect to the trailer brake wire on the 7 way 47185 Hopkins adapter? I had a six way and didnt know what to do with the blue wire and I assumed it was for the brakes, but after looking at my owners manual, it is for the center high mount stop light chmsl.

asked by: Daniel G

Expert Reply:

If you attached the brake output wire of your 7-way adapter # 37185 to a third brake light circuit it would lock up the trailer brakes everytime you touched the vehicle's brake pedal. You need a brake controller to smoothly apply the brakes of the trailer. A brake controller is designed to apply varying voltage to the brake output circuit to put different amounts of braking on the trailer's brake assemblies as needed.

For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. This is a proportional brake controller that senses the amount of braking the tow vehicle is applying and applies a proportionate amount to the trailer brakes.

I attached a help article on brake controllers which has more info as well.

expert reply by: Jameson C