How to Install and Connect a Trailer Brake Controller
By Eric the Car Guy
1. I was a bit concerned that the power going to the brake controller was momentary, yet the power leading to the trailer connector was fused. Then, I saw the schematic and it showed the red wire was for auxiliary power.
2. The blue wire is the power wire for the brakes. Therefore, the ground to Vehicle wire, and the ground to Trailer wire (both White) are essential if you want to have brakes. I know you didn’t have a trailer handy, but people should know how important that the white wire is securely grounded to the trailer.
3. Did you discover why your back-up light connection was weak (purple wire)? The diagram shows that the wire can be used for back up lights or a Hydraulic Coupler. Either one of those would not work well with inadequate voltage.
4. This was an excellent video. The quality of the install and the emphasis on safety were superb.
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