Re: dash lights and tailights don\'t work? im stumped
I would also guess a bad-relay. My fog light relay got soaked.. and the lights would go on when the switch was off... and vice versa. I'd have to toggle it a few times, turning my mains on/off a couple times, before everything would stay off.
One symptom was dimmed headlights...
I took the relay out (disabling my fogs), and the problem cleared up.
Worth a try...
'88 YJ 4.2L, 32/36 Weber, HEI, 2.5" spring lift, 31" BFG ATs.