Have you replaced the voltage regulator with a new one? They sell two kinds, one for 12 dollars and the other for around 45 or 50. I replaced around 25 cheap regulators. All had lasted only a week or so, clean up the ground for the voltage regulator. You aren't having much fun with this car. I'm sure its shorting intermittantly, I am getting 85 and 84 confused. You are grounding a green wire at regulator? And its full fielding, but when you plug it in, no charge? Charging voltage is 13.8-14.9 or so. Some are as low as 13.8(imports) some are high(15.2) yours should be higher, around 14.6 after the battery is ok. Is this a good battery? If you have 12 volts at the other(blue)wire, maybe you should try running your own wire, I worry your getting a short with the blue wire. That may balso have a short or open at times. Clean reg. Ground, run new green field wire, and replace the regulator if it will not charge.
You are thinking of doing what I had to do on my omni. I ran a new field circuit. Both wires, the blue can be battery voltage, but should be fused, and the other is ok to bypass. It worked fine.
Make sure you renew the wire and not splice it in, ok.
Wednesday, December 9th, 2009 AT 11:50 PM