I would like to go ahead and trim the leads for the front and rear harness for connecting the lights and put weather packs on them, but I won't have the body in place for quite a while. I want to trim the leads on the wires coming off the front and rear wiring harnesses and also the leads on the lights themselves. How many inches of wire total should I need extended from the front and rear of the frame in order to have enough to easily plug in the lights without having too much excess wire? I really don't want to had to add wire later but would like to test all my electrical as soon as possible before I put the dash into final position.