Very recent re-up to this Forum, I've had this 72 Z since 1989, finally putting the finishing touches on her but she had an aftermarket A/C system at one time. I have the original manuals and wiring diagrams , but I can't find a decent wiring diagram that shows the original six wire factory blower switch set up. My current harness was hacked up 50 some years ago to add the A/C. And yes I did check across the fuses with a test light. Anybody have any experience with this harness? Appreciate any help in advance.