Thanks guys. I disconnected all the "house battery" 110 etc stuff and went back to basic C body car with 1 battery no cross over solenoid. Engine battery 12.4 with car off. Start and idle 13.5 on meter and 13.4 on Sniper. Lights and wipers at idle, no red warning light. Turn on AC with all that on and we drop to 11.4 on meter and flashing yellow 11.3 on Sniper, red light in dash. Car is factory AC and has a Wuhan (probably) Oreilly alternator on it. Will try the Tuff Stuff and report back. Phish