There was a post somewhere, within the last couple of days, that included a link to a toyota service manual for a 2003 that has all the wiring diagrams.marcat75 said:Yes - I do really want to do that Have background in hvac, EPA refrigerant certified Univeral & Section 609, blah blah blah. Hence: "I know there's certain times it's beneficial to use but I think I'm capable of deciding that for myself" Also I've had no problems on previous vehicles that didn't have the compressor tied-in to the defrost switch because I knew when to use it. But yes I guess I'd agree that if someone doesn't know/can't remember to run the compressor every now and then they shouldn't disable it (hopefully they will have the need to run defrost).
IMO - I think the automakers were getting owners who didn't/wouldn't read the owners manual complaining that the defrost wasn't clearing the windshield so the automakers re-designed to accomodate for those people, kind of like idiot lights instead of guages.
If I had the wiring diagram I'd figure it out myself and post it, with a disclaimer of course for those that require that sort of thing.
Nothing personal, just didn't want others thinking I didn't really want to do it anymore and not post the answer if they have it.