I own an 86 trans am and my quick disconnect harness that has the connections for the defogger and gain switch hook up to this. My car didnt come with the feature of a hatch release switch or any wiring. I need to know why there are 4 empty spots in this box? Are they for the hatch release? All the rest of the spots are occupied with the wires for the other switches. Please help. I dont know if I need to run any wiring behind my dash for the hatch release switch to work.