I have a compufire on mine . However I was riding about 100 miles from home and came to a intersection and the bike shut off and wouldnt crank. I thought my alt went as it was a very hot day. Called wife and towed bike home . went to remove alt and found the connector came loose.. I was told the alt is basically the same as a 95 saturn SL1 , with the drive and front case being different. (parts anyone). If its bad get a compufire , if it goes bad they will rebuild it for 150.00 . I also have a led that changes color as to the battery voltage.