on 9/20/05 1:51 PM, John Nasta at [EMAIL PROTECTED] wrote: > I just had the alternator tested and it is putting out 14 volts at the > battery even with the headlights and the generator light on (and the > wipers). The battery was also load tested and it seems to be fine. So, I > don't seem to have a bad alternator or a bad battery, yet the generator > light comes on when the headlights are on. I have HEI and an internal > regulator, and M&H built the engine harness & forward lamp harness for that > setup. I have a total of 4 wires connected to the alternator. Two go into > the plastic clip, and I assume those must be right. The other two both go > into the rubber boot and are attached to the post at the back of the > alternator. Does that sound correct? Any help is appreciated. > > Thank you, > John Nasta > > > > It's easy to get the bulb receptacles mixed up and in the wrong holes on the back of the gauge cluster, John. I noticed similar symptoms on a couple of my '69s too, except that it was for the oil pressure warning light at the bottom of the cluster. Check to see that the warning light bulb for your charging system doesn't have a grey wire coming out of it. Grey wires are for the dash lights, and if they've been inadvertently switched it might explain why you have an alternator warning light ONLY when the headlights are on or the dash lights are illuminated.
It's not real easy to see up in there behind the dash sometimes, and if you end up taking the gauge carrier out of the dash for a better look, you may as well replace all your bulbs and spend a little time cleaning the gauge lens. It'd also be a good time to clean the gauges faces with a "blow brush" like the kind photographers use to clean their lenses... You can pick one up inexpensively at most photo supply stores. It's amazing how much brighter everything looks with a clean lens, gauge faces, and new bulbs! Hope this helps! Chuck Hanson
