If you used the Painless #10127 harness, be sure to download the latest manual, as the Acc wiring destructions were updated.
We could use some more info. What are you using for ignition? Stock, or after market like MSD? What alternator and what is the output while fielding? Have you checked to see if there is a draw on the battery (or a voltage drop over night)? What wiring harness? Did you ensure to sand off of your ground pads for a good connection? What starter relay (3 or 4 post) is it new or old?
