Hello everyone, I recently purchased a 92 740 wagon and up till now all the lights were working great. But today I turned the headlights on and noticed that none of them were working, not the parking lights, headlights or dashlights. But when I put it on the parking lights alone, the parking lights and the dashlights worked fine. Can anyone give me an idea of where I should start to look first? Thanks in advance, Nelson.

 

i would always check fuses first...
with the daytime running headlights there also may be a prblem with the wiring between the ignition switch and headlight switch or the ignition switch itself...since you can turn the paring lights on butnot the headlights on that sounds like it could be the problem.