88GTBLACK

Just picked up my 2nd stang it's an 88 with 85mph speedo.
All fuses are good and i got no dash, hvac, no lights at all pitch black darkness inside my stang at night. Headlights work.

Is there a relay or something simple before i rip it apart? Thanks

1988TTOP

check the dimmer switch

mustang_302

ya check the dimmer mine went bad on my car and did the same thing

88GTBLACK

I played with the switch, there not going on and the interior light clicks on when the switch is all the way over. Dimmer switches going bad a common thing? Thanks a lot ill pick up a new one

FoxGT

Check your headlight switch as well, both are wired inline. There are a lot of cases where the connector going into the headlight switch will melt due ford running too small of wire, especially in fog light cars.

88GTBLACK

^
My headlight switch went on my 87GT my headlights would go on and off on me I replaced it on that.
Headlights stay on with this one, only this time its the interior lights that
dont come on I gotta take a look
and play with it when i see my car again I'll let you guys know what exactly it is

Thanks

88GTBLACK

Newdimmer switch. It workd in the parts car..I watched it and adjusted it. I took it out myself brought it home for 3 dollars put it in and nothing!

Fuses are good dimmer switch is good

Horn doesnt work. Trunk popper doesnt work. Everything else works.

Im going to chase wires down, what could it be?!?!

Headlight switch works fine fog lights work and everything. No flicker

What could it be?

FoxGT

I was referring to the wire coming out of the headlight switch for the illumination for the gauges. I believe it comes out of the headlight switch & goes down to the dimmer switch. Not sure on the color though, I think it's blue/red stripe. It's been quite a while though.

If you have a voltmeter, I would just take the gauges out & check for 12v at the illumination lamps & trace it from there.

eagle1956

Eagle 1956 here , my 95 did the same thing ,I replaced the light switch which turned out be cracked and burnt .also get the plug with the pigtails already installed because if yours looks like mine did when you take it apart some of the wires are fried together.i still have some light problems but that took care of the dash.

Justin Dow

Im having the same issue with my 1990 fox so I guess I will have to dust off the old multi meter but if there is any other ideas I am open to them. Head lights, turn signals, and driving lights work dome light turns on when the swtich is turned all the way to the right and the insturment panel is off, just to clarify my issue