Had to do some welding on my 93, took all necessary precautions and still somethings f@#ked now. Put everything back together today and with a full charged battery readin 12.56V it drops power and everything goes dimm on the dash once put to 3rd click on the ignition. Not even a click on the starter so there's a major drop in power som where. I dont get it cause the ECU was unplugged and battery removed during all the welding work, so idk what fried. Gotta get down and dirty now with the old multimeter now. Any suggestions where to start probing? Im thinking the starter relay in the engine bay box but not sure yet. And all the fuses are good so im thinking it must be a relay but why the power drop?

 

Had the same thing happen on my 89 after welding. It was a ground wire problem. From battery to chassis.

 

Thank You burnzya. That makes good sense. Gonna check that first thing in the morning, too dark to start messin around in my garage now. Hope it is just a ground issue.