sounds very much like an intermittant short to ground. You can get a rubtrhough somewhere on the wiring harness, that only touches metal in a certain circumstance, such as making a right turn. These are a pain in the ass to track down, i did it for about two years. its a very time consuming process. if you plan on doing it yourself, get ready to know your car very intamately. lol
__________________
Chevrolet Camaro - I enjoy beating the hell out of people
http://www.automotiveforums.com/vbulletin/showthread.php?t=68052