Has anyone ever had a problem with their stock radio draining their battery? The reason I think it is the radio is this. Had a little problem keeping it charged when I first got the car. Swapped in an aftermarket, and the problem seemed to go away. Well a couple months ago, my aftermarket got stolen, so I put the stock one back in. And so came my problem again. I was just wondering if their is some kind of constant power supply that the stock radio uses that aftermarkets dont or what is going on. I've just got the basic cassette deck if that makes a difference. Thanks guys!