Hey guys,
as some of you may know i just about finished my frame off restoration on my 71. I pulled a front end wire harness out of a 71 4 door malibu because the previous one in my car was corroted together creating a mess. The car is fully charged and i drive it a couple times, and its dead again when i try to start it. :confused: This harness appears to be fine. The alternator is a chrome powermaster 100 something amp alternator i bought used from ebay. I had it checked out at the parts store, and its supposedly fine. My dual 1000 CCA batteries are mounted in the trunk. And im still losing power somewhere. I checked and double checked my grounds and their mating surfaces. What should i do.. I am going to try to swap back to the old alternator that i never had problems with. If that doesnt work, i guess i should buy a new harness. Can you offer any thought?

Take a peek at the post running next to yours. See if the problem is a battery drain problem. If it's not that then the battery(s) aren't being charged enough.
http://www.chevelles.com/forum/ultimatebb.php?ubb=get_topic;f=22;t=003774

John,
thanks for pointing me to that forum. Lots of things i can still try. but i got a question,
lets say i am at the point where i am pulling fuses and the test light goes out. Then what do i do from there?

Depends on what it is. Could be just a light that's staying on. Could be that you really have a charging problem. Not enough information yet. Just guessing at this point.