i have a 88 aod, 5.0, the turn signals were the only lights not working changed muti switch and also the switch and changed nothing, Now my problems have grown to no dash lights no parking lights or tail lights. have replaced all blubs, fuses, and added grounds. head lights and brake lights work fine and flashers...

 

I'm no electrical wiz, but I'd start at the fuse box. Check for power to those circuits. Then follow till you find where your losing it. Sounds like its more than a simple relay or wire rub thru. To lose all those lights after you replaced multi switch, I'd check that out again. Was it all working before you reassembled it?

 

everything had been working for last 4 months the problem just happen, so today replaced headlight switch and now dash lights work, tail lights work , brake lights work.. now head lights do Not work unless you pull handle towards you setting in car when you release it they go out can push forward for high beam and Dont work!!!! turn signals do not either!!!! muti switch again and still no change????? NEED HELP?????

 

Sounds like a nightmare. Wish I could be more help, the only advice I have left is to use the search and dig around for some old threads with similar problems. I'm sure your not the first to go through this, and the answer is here somewhere, just gotta dig a little.

Maybe someone will chime in here with more knowledge than me and help.

 

I might be of some help. It sounds like since you replaced the headlight switch it improved some of your lights coming on, that maybe that is where the problem might have started. Now that it is replaced I think you might have some harness (soft or melted) in the steering column check that out visually trace harness back up through dash to make sure you have inspected all. IF it still is f'd up and you are pulling your hair out pull the switch back out and take back cause it's got to be defective.

 

Sounds like you have a short somewhere. Becareful where you just put a ground. You don't want a ground loop.

 

ok yahoooooooooooo victory all is fixed , i found at both headlight switch the plugs the plug into the housing where coming out when push into houseing...on both muti functional switch n head light switch pull plug out wires looked to st in housing.
all is well whooooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !11