Hopkins Agility Brake Controller Not Working On a 2003 Chevrolet Silverado  

Question:

Expert Reply:

The Agility Trailer Brake Controller, item # HM47294, has a power indicator light. If this light is not on, I would start by testing the wiring to the brake controller with a circuit tester, item # PTW2993 if needed. The black wire going into the brake controller should have power and the red wire should have power only when the brake pedal is pressed. The blue wire will only have power when the brake controller is activated and if the black wire has power on it. The white wire is the ground for the controller.

If your truck has factory tow package wiring and you do not have power on the black wire then you may need to connect the brake controller power wire under the hood. The connections under the hood (see link) will be made with wires between the fuse box and the firewall underneath a curved bracket. Remove the bracket, the fuse box cover, and the lower cover. There will be a red wire located next to the fuse box that needs to be connected to the nearest power post, see photo link. You will also need to make sure the fuse is installed in the nearest location to the post.

If there is no factory connection above the spare tire at the rear of the vehicle, then you may need to run a power wire and a brake feed wire to the connector at the back of the vehicle. The connections under the hood are in the same location. There will be a blue wire and/or a red wire located next to the fuse box. The red wire has a ring terminal on it and needs to be connected to the power post nearest to its location. The blue wire has a connector on the end that needs to be cut off and then a 10-gauge wire will need to be ran to the trailer brake connection in the trailer connector at the rear of the vehicle. If you need a power wire for trailer towing a 10-gauge wire should be ran from the farthest forward power post at the same time. I would use the Jacketed 2 Wire, 10 Gauge, Brake Wire, item # 10-2-1, for this.

You will also need to make sure that the proper fuses are installed in the fuse box at the locations nearest the power posts (see link).

expert reply by: Robert G

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