Hey, new problem with my 03 stang. My headlights will turn on but my tails and interior lights won't turn on. Or I can get my taillights to come on but no headlights. I checks my fuses all good. Could it be a ground?

 

check your multi-switch! also check the connections under the dash by pedals to make sure no previous hack jobs have been done.

 

I tried everything so today I just hooked it up to a toggle switch and now I have no worries,