Thanks for the reply Jim.

I have tested/checked the resistor. It checks ok. Even plugged in a new one to confirm. Same results; blower comes on when ignition switch is turned on. Looking at Isuzu manual, there is nothing else in this circuit. Beginning to believe I have a PCM gremlin.

SIDENOTE: Saw where the control module is located for the wiper delay. I can barely get two fingers on it. Don't know how I am going to get my hand up there to unscrew it. (The relays need replaced.)

Anyway... Any other thoughts on the blower issue will be appreciated.

Richard
Apex, NC