On the smaller wires at the relay, theres a tan/ lt blue, and also a tan/ yellow. Both tested to have 12-13v when car is running, and ac control is on. There is 12v at the purple wire what I assume is the pressure switch, at the firewall, where the connector has a purple on one side, and the black/yellow and the tan/lt blue on the other side. I continuity checked the terminals of the switch with the plug off, and have continuity across the terminals.
Also, when the car is running, and I jumper the red wire to the black/yellow at the relay, the ac clutch comes on, air starts working, and the electric fan (flex lite 185) kicks on. Wiring for the fan done according to specs for the controller.
I dont know where to look next. Not sure i understand why the two tan wires at the relay both have 12v power, so in essence the relay wont change position unless one of them gets grounded, but then, when is that supposed to happen? another switch or relay elsewhere???
68 Mustang FB, Eleanor body kit, pepper gray, TCI full chassis frame cradle, 9 inch w 3 link, torque arm, panhard bar, coil overs, wildwood brakes. 427 dart CHI 3v heads, intake