Hi,--- Received your message. I think the post by Ferman is right on. Over the years I have seen many "hack jobs" with these after-market alarms. I have 2 questions before we determine the reason why the fuse is blowing. 1) Does the alarm have a remote starter system built in ? 2) Do you see any aftermarket wiring coming through the cowl that is tapped into your engine wiring harness ? Please reply with the answers to these 2 questions ASAP.------ Ray