1988GTstang

i just replaced my headlights and now when im driving they flash on and off...it never did this before i replaced them...i check all the wiring and its all correct....it seems to only do it when i turn the fogs on but i cant be 100% sure of that (by the way before i changed my headlights i never used the fogs) my friend said maybe my batter is to weak to power it all but i doubt that? any ideas? ive got new hid's and im dying to put them in but i dont want them to just flash

mjr46

on foxes the fog lights run off the headlight switch/dimmer switchand often times the current draw will exceed the wirings capabilities and overheat the circuit and often times damages wiring.. there was a bullutien ford put out on this issue..what you end up doing is using a relay and dedicate the fog light circuit to it's own seperate circuit...not sure this is your problem but possible..first I'd make sure all ground connections are good and secure

1988GTstang

do u kno where the headlights are grounded? i never really did any electrical work so im kinda lost lol

mjr46

no I don't have a wiring diagram on me right now but if you google it I'm sure you can come up with one or pm joel5.0 for one

1988GTstang

iight thanks bro ill do that right now
i think ima put my HID's in then and just not run the fogs
and where wouldi place the relay when i do that?

kriesel

i had that same thing happen 8 years ago, i replaced the headlight switch in the dash, that cured it, MJR46 is right though, they do run too much current through them. Try a new headlight switch first, i got mine from a junk yard for about 5 bucks,its a cheap fix if it works!!