Running Wires To Fuse Box For Brake Controller On 2004 Chevrolet Silverado 1500

Updated 04/19/2017 | Published 04/18/2017

Question:

Hello. i have a Hopkins Agility brake controller with plug-in harness for a 2004 Chevrolet Silverado 1500. i was wondering if you could help me locate the wiring that is required under the hood in the fuse box. I found the red wire with the ring terminal and the blue wire with the plug on it. What do i need to hook these up and do you carry what is needed. Any help would be much appreciated. Thank you

asked by: Glenn B

Expert Reply:

I have attached a couple of photos that show how to install the Red wire and Blue wire with the plug. As the photo shows, place the red wire over the closest positive post (B). A green 30 amp fuse is needed in the location nearest the positive post to power the brake controller. A smaller brake controller may require only a 20 amp fuse. Consult the brake controller installation instructions and the vehicle's owner's manual. Next, clip off the connector on the blue wire (A).

The installation kit provides a gray "double bonded" wire which is really two wires in one. Connect the white wire in the gray housing to the blue wire under the hood. If a hot lead is also needed connect the black wire (shown in red for clarity) to the other auxiliary positive post. A 40 amp fuse needs to be placed in the last spot, closest to the post, to power the hot lead (see picture). If this post is already in use, you may connect the hot lead directly to the positive side of the battery via a 40 amp circuit breaker (provided in kit). After the connections are made, route the remaining length of the double bonded wire to the back of the vehicle, where it will be attached to the 6 or 7-way adapter (provided). Usually the wire is run either inside or above the frame on the driver's side of the truck. Once run, connect the white (brake) and black (hot) to the blue (brake) and black (hot), respectively, on the back of the 6- or 7-way adapter.

expert reply by: Jeffrey L