OKAY, mine broke, fan position one, ac on, no blower. Fan position 2,3,4 blower on, no ac. One of the resistor coils broke. A dab of solder and now works. Those resistors on rockauto for 88/89 323 will probably work, the blue wire is a ground, looks to be shared with the blower motor ground. Not sure if those connectors are right, but you can always cut the new blue wire and splice it into the old blue wire in the car and wire nut it...