Re: my 1972 220d/automatic

My generator idiot light refuses to shut off despite my having done the following things: (a professional) installed new (rebuilt bosch) alternator, I installed a new solid state voltage regulator and new grounding cable from engine to body frame.

Can somebody give me detailed troubleshooting guidelines so that I can track down the electrical problem I am having? And yes, the batteries are great. They need constant recharging, as the electrical system is not recharging them effectively.

I thank you in advace for any help you send my way.

Alan H.

First culprit I'd investigate is roasted *wiring harness* that leads from alt to starter motor - toasted and cracked insulation cooked from proximity to exhaust at engine hotside. This happened with one of my w123 240D's that started eating alternators.

Thanks. I'll check that out.

I'll second that!

John

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Certified Registered Nurse Anesthetist (CRNA)
2002 F250 powerstroke with Plantdrive WVO conversion
1983 300SD 190K miles ,sold
2006 E320 CDI