What are these wires for?
On F250 (06) there are four wires coming out of loom at the fire wall on diver side (under hood) one blk, white,red & blue?
Forum Discussion
The up fitter switches are separate from these wires. This wire harness is for customer added equipment. There is an additional 10amp wire under the dashboard called "customer access" for adding equipment. These wires are present so you don't have to run additional wires thought the firewall.
