Originally posted by horseydug:

Edit:
It would seem that problem is at fuse panel. With relay out terminals 2 & 3 of the relay socket should both have 12 volts to ground. Terminal 5 should have zero volts to ground, and if so then terminal 3 should read 12 volts to terminal 5. Relay in, pull fuse, ignition on, defrost switch pushed relay should click and then volts to ground from one of the fuse socket terminals should be 12 volts.
There have been several cases of loose connections at fuse panel and wiggling the connectors seems to be the only method of finding.



OK, I'll check it out, thanks for all your help!

Matt