August 4, 2016

Wire Harness Installation Instructions

Wire Harness Installation Step 1

Step 1:

Run the wire harness from the Headache Rack between the cab and the body.

Wire Harness Installation Step 2

Step 2:

On the back of the truck, unplug the 7-Way Plug.

Wire Harness Installation Step 3

Step 3:

Insert the 7-Way Plug from the modular wire harness, to the back of the truck.

Wire Harness Installation Step 4

Step 4:

Reattach the existing 7-Way Plug into the second port of the modular wire harness.

Wire Harness Installation Step 5

Step 5:

Run wire harness from back to front using zip-ties to secure it to the frame of the truck body. (Secure where the harness won’t get rubbed, chaffed, or cut.)

Wire Harness Installation Step 6Wire Harness Installation Step 6

Step 6:

Attach the modular wire harness to the Headache Rack wire harness. Wrap the connection with electrical tape to secure connection.

Wire Harness Installation Step 7

Step 7:

Wrap excess harness and zip-tie to a secure, hidden, spot.

Step 8:

Check the lights to make sure they work properly.

For a video showing how to install your wire harness, please visit our video gallery.