I read a couple of threads on disconnecting the computer harness on a 1981. it sounds like it's pretty straight forward but i want to make sure. Hopefully this picture will help. The 2 connectors that are close to each other plugged into the computer. The connector by itself plugged into a harness that goes up into the dash over the steering column it seems. What is this for and do i need any of those wires in that harness.