[ercoupe-tech] Amps showing discharge on run up

[dtaylor9319]

Went to fly Saturday morning and found a sharp discharge on the Amp Meter when 
electronic circuits were turned on. Ran up to 2100RPM with nothing on but the 
radio and got no positive indication. Where do you start to sort out what the 
source of the problem is. Cigarette lighter plug in voltmeter shows 11.2 volts. 
1966 Alon Aircoupe with a C90 16F. Has generator not alternator system.