you should have an empty plug behind your speedo,,, the wires coming in are yellow and brown,,, simply go to your local dealership and get yourself one of their plugs that tap into it and then wire your hot into the yellow and your ground into the brown. I did mine that way and it turned out just fine. I ran the wire through one of the holes that the windshield goes through and then put the cig lighter inside my dash bag. My cig plug for my gps is fused,,, make sure yours is also.