Well, I've changed the switch, changed the resistor, and changed the high speed blower regulator and I still don't have the high speed on my A/C / heater blower switch.
Is there something else I should check.
Any ideas would be greatly appreciated.

Well, I've changed the switch, changed the resistor, and changed the high speed blower regulator and I still don't have the high speed on my A/C / heater blower switch.
Is there something else I should check.
Any ideas would be greatly appreciated.

Does the High Blower relay click when you move the switch to High?
Is there power to the large wire (orange, IIRC) at the High Blower relay?

Im gonna stick my neck out and tell you what I know, when I bought my 85 the blower motor had things living in it, highespeed is created by putting a straight 12 (positive) on the large spade terminal on the blower, maybe your motor is just old and not capable of going any faster(could happen)(like us) just run a wire from positive on battery terminal if nothing closer, Pull straight up on wire on top of blower and see how fast it goes, that top speed ......................Im assuming you know basic electricity the other speeds are created by running through resistors.....................that what I would do, hope this helps

Have you seen this article?

No High-Blower operation, G-Body (http://www.elcaminocentral.com/showthread.php?t=28434)

Thanks guys, I'll check all those things in the morning.

No High-Blower operation, G-Body (http://www.elcaminocentral.com/showthread.php?t=28434) is a good bet. I had the same issue, spent lots of money replacing things that didn't need replacing, then read this artical and it was the fix!