does anyone have a diagram for the rear-defrost wiring of both a 3rd gen, or a 4th gen? If you've got both that'd be great, or if you have one or the other that would work too. I'm not 100% if mines working yet, although the light in the 4th gen will come on when the button is pressed, but only w/ the car running, there's no power to it just in the on position.

 

That is because it gets it's power from the gauge fuse which is not hot at all times for the momentary switch in the circuit. It also uses the PWR ACC circuit breaker which is hot at all times for the actual heating when the momentarty switch is closed.

 

that was the thought on that, do ya happen to have a wiring layout for it?

 

Yep!!!!!!!!!!

 

awesome, thanks a million...should solve my troubles.