1987 Pulsar Electrical

wiring diagrams.

First check the fuses. Specifically, the 'meter' fuse on most cars (not sure about yours). If the gauges don't work too (except speedometer) than it also could be a bad connection to the gauge cluster.

What works? Just headlights? Does anything electrical work that does not need the ignition switch to be in the on position? Possibly four way flashers, brake lights, horn, interior light, dash lights in instrument panel as well as headlights should all work without the key in the ignition and in the acc or on position. If this is what you have, then I would say you need to replace the ignition switch.
Hope this helps.

This is not a short.

You just go to the link I attached I'm sure you will get the solution of your problem
2000 Jeep Grand Cherokee

The turn signals use a small relay for the flash, it's located in the interior fuse panel under the dash (small metal/plastic can)...it's the only thing in the fuse panel that's not a fuse.

They're a few dollars at Autozone and easy to replace.

The short/overload killing the dash gauges will be a bit harder to troubleshoot...Do the gauges die with the parking lights, or only after the switch is all the way out to headlights?

look for a bear wire in the trunk or somewhere along the way. The circuit is definatly overloaded. It could even be the cigar lighter. Have yuo had any work done lately?

Remove the engine light from the dash then it wouldn't light up anymore =]

you have to take out the gauges, they will be on the back. In some cases you have to take apart most of the dash to get the instrument panel out, sometimes you can just take the trim off the instrument panel. I had to take apart most of my dash in my 86.

With all those problems, it is most likely a body control module gone bad. You would have to take it to a Chrysler dealer to verify.