Painless wiring install... snafu?
Check to see how you hooked up the ign. switch. Memike was right. There are alot of people that hook the ign. wire or Acc. wire on the wrong terminal at the switch. Hey it happens. I would also look at how the alt is wired up. What car is this on. If you need to talk to me about it call me at Painless. (817)244-6212 ext. 1016. I can help you get it taken care of.
Jason