[ironhead]

Rick, thanks so much for your reply. Electrical is not my strong suit as you have guessed, but I will try to address each item you mentioned. My CR wiring might be a bit light at 14 ga from the fact. I had the 70 amp. alt. tested at Advance Auto, but they couldn't tell me what it put out, just that it works, which I knew. I have March pulleys, crank 6 1/4 in. Water pump 5 in. Alt. 3 in. Serpintine belt. MSD 6AL ign box. Optima 800cca 1000mca battery. My problems occur after the engine has warmed up and the fan kicks on the voltage drops from 12 1/2-13 down to 8 with only the fuel pump and fan on. A s you can imagine the car doesn't get driven much, 1500 mi. since completion in '90s. Thanks again Rick for your input.