I have a 1988 Mercury Grand Marquis Park Colony wagon, 5.0 L AOD trans.
Problem- The headlights didnt work the other morning. So I had to drive holding the highbeam switch on, and that broke. When I put the highbeam on, all 4 headlamps go on. When off, none. Even with headlight switch pulled out I have nothing. So I replaced both the headlight switch on dash, the headlight relay behind it, and the turnsignal/highbeam switch on the steering column. (100.00) A few problems were resolved. The turn signal switch is great. The headlight switch timer works and the side marking lights and parking lights go out after a few minutes. I still do not have low beams unless I put the high beam switch on and make all 4 come on.
WHAT IS GOING ON?
I have no idea at this point what to do. I have tested all my fuses in the dashboard fuse box. IS there some other fuse somewhere?
I have light tested the headlight sockets. With the headlight switch in the on position: The lowbeams (highbeam switch off) does not light, the lowbeams (highbeam switch on) do light. That is the extent of my problem. I have no idea what else it could be. One recommendation is that the harness that snaps into the headlamp switch could be corroded. The other thing is there could be a short after the harness. If you have any suggestions, please please please feel free to share. I am really at my wits end with this after spending 12 hours and a hundred bucks.
have the same problem?
Friday, April 26th, 2013 AT 9:26 PM