Delete what wires?

Get a ford wiring manual for your year car.
Messing with any wires without it would be a big mistake.

I did it a few times but this last time, I didn't cut anything. I just ran the wires straight from the hole in the firewall into the hole where the break line runs and then tied them off at the spot where the big canister cruise thing (used to be for me) is. I ran the headlight wires behind the strut and down the frame.