The wire that supplies current goes through a circuit breaker that is mounted on the firewall (under the hood, above the steering column). Refer to your AIM, upc C06 sheet A1, on page 142. If you don't have an AIM, there's a free download at the General discussion Forum - hope this helps. That page also shows the switch that you inquired about. If you need further info or pictures you can PM me, and I will try to help.