I am looking to rewire my Duster partly, mainly just the ignition, front lights, and charging and fusible link, which I believe all come in the same harness ($265 bucks from Classic Industries). The car was originally an a/c car, but I don't need the a/c or heater again. Can I simply do away with that wiring and just leave it to the wiring harness that I mentioned above? Am I missing any other harnesses required to make what Im looking for happen? I don't plan to do anything beyond the bulkhead/back side of firewall.