Installation of Trailer Brake Controller on 2006 Chevy Express 3500 Cab and Chassis Motorhome

Question:

Install a trailer brake controller for a 2007 chevy express van motorhome with tow package. I have a 2007 Forest River Motorhome with a 2006 chevy 3500 express van engine and chassis and I need to install a trailer brake controller. It already has a 7 prong trailer brake connector. The owners manual says there is a factory connector behind a panel on the drivers side by the E-brake see pic. I popped off the panel and saw an empty connector with 5 wires - brown w/ white stripe, blue, orange, white, and black on the other side of the connector see pics. Am I able to connect a brake controller directly to this? I can only find brake controllers with 4 wires so Im not sure how to adapt to that - hard wire or do you know of another adapter? Or, are there other wires tucked under behind the brake pedal that are more appropriate? Also, the fuse diagram shows TRLR where there is an empty fuse slot where a 30A fuse is needed see pics. Do I need that fuse to make this work? I need to install this by next week so Im hoping to get a quick response if possible. Thank you. I could actually only upload one picture... I hope I picked the most pertinent one

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Expert Reply:

Unfortunately there isn't a brake controller harness or wire bundle we have found for the 2006 Chevy Express models whether cab and chassis or standard van. I have seen the owners manual state there is this feature so I recommend checking your owners manual for any trailer fuses needed in addition to the empty fuse you have already found. Then you can use a circuit tester like # PTW2993 to test the brake functions. Brake controllers only use 4 wires, so there will be an extra wire if this checks out. There isn't a wiring harness, so you will splice into those wires to hardwire your controller.

Like I stated we haven't found the factory wiring, so we normally recommend hardwiring your controller using # 5506 if you want a dash controller and have a factory 7-way connector. The other option is to use the Curt Echo Mobile Trailer Brake Controller - Wireless # C51180 which simply needs 12V power at that 7-way to work and will capture the braking signal there as well, so not additional wiring is needed. If you have a factory 7-way the fuse you referenced will be required.

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Jason S

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