I'm converting my 66 Conv from I6 with 3 speed to 289 with automatic. I already have the neutral safety switch and wiring, however I'm not sure about routing through the firewall. Everything I have read and seen shows the neutral safety wire exiting the firewall above the main harness connector. On my mustang there is already a wire (or wires) exiting there that runs to a resistor? just below the solenoid. Was this part of the manual trans
system and should I remove it or is there another location where the switch wires should come out?