I own a 97' f-150 4x4 and am also a volunteer firefighter. I have tried to install a used wig-wag system into my headlight system. The directions from Galls that I got was probably mainly for Crown Vic. police cars, but the dirs. were supposed to be universal because it had 5-6 different ways to hook it up depending on the way the headlights are ran. The wig-wag system, when turned on at the switch, will alternately flash the bright lights, no matter if the low beams are on or off. The guy I got the box from was very sure that it worked just fine when he took it out of his truck. When I turn the box on now my head lights go out, also no wig-wag. I wondered if anyone knew anything about these or if you had a copy of the headlight wiring diagram for my 97' f150, or where I could get one. I would appreciate any help.
Thanks,