I just hooked mine up recently, but the only problem I have, is I need to get a different relay so that my signals flash at a slower rate. So without knowing how you hooked it up, it's tough to troubleshoot the problem. Sounds like you may have tied into the tail light circuit. This should not be messed with. It's a seperate circuit. On mine, I just spliced into the brake lights. The factory manual and a DMM came in handy for me as I didn't have any instructions for my integrator.