My rear defroster turns off by itself i've noticed...and i just realized that it turns off when my rear winshield is cleared up by the defroster, in other words, it stops when it's done doing what it's supposed to do. Just wondering if fc's are supposed to be like that, anyone know?

 

Yes- the defrost circuit is on a timer. Stays on for x amount of time, then shuts off.

 

It's on a timer. It's about 20 minutes I think, but I've never timed it.

 

most rear defrosters are my 87 oldsmobile even had it. great car i might ad. lovin the 87 year so i bought a 87 sports car

 

Ever since I put in my Haltech, my rear defroster hasnt worked Anyone know how to make it work again? Or can I just wire it through a switch?

 

ahhhh icic....my old car never turned it off