Hi, what a NIGHTMARE! After 4 days of working on my electrical problem ( no turn signals or warning lights coming on at startand no tach or voltmeter. ) I had fixed the problem. I had the alt. tested it was no good so I replaced it. No luck. Next checked all connections even pulled the cluster out. After many hours I found the Lg ( blue/ green stripe wire coming off the fuss box has bubbled off the coating on the wire. I followed it up in to and its goes up the drivers pillar, take off the pillar and sure enough I pierced the wire with a mounting screw. I fix that and replace the Lg wire also but still no luck and it's late. The next day while looking at the fuss box I find the fuss for the regulator is bad, it was fine when I checked the day before so I replaced and Presto everything works. Now 3 days have gone by and no problems until last night, start it up and back to same problem no tach/ voltmeter, warning lights or turn signals. I check the fuss and it is fine but I still put in a new one. No luck. The Lg wire I replaced is also fine. PPPPPPPLEASE CAN ANYONE HELP ME FIX THIS! This is on a 1979 GS. THANKS!

 

Ok. On the external resistor on the drivers strut tower coming off the coils I noticed one was very hot. So would this mean I have a short? Also if anyone owning a 79 could send me some pics showing the wiring along the drivers side of the engine compartment it would help. Thanks!

 

Check your grounding. Sounds like that may be your issue. Good luck!

 

i was just going to say reground the entire vehicle

what you do is get some 0 gauge grounding wire from a stereo shop, use that to replace the stock main ground wire, then after you do that get about 10 feet of 10 gauge wire, and a bunch of crimp on eyelettes, then you run a wire from the main grounding location on the drivers side strut tower, then run that to a top bolt on the trannt where it bolts to the motor, then from there run another wire to a bolt on the intake manifold, then from there run a wire to the tension bolt on the alternator bracket, it will make a world of difference as far as grounding is concerned, also you might want to look into some relays for some of the stock accessories, to get a little load off the main electrical system

good luck!