Another Problem!

Ironsam63

Registered User
I got a basically stock 89 SC and does anyone know why the rear defrost button lights up when I push it and then in about 20 seconds it dims real low and then shuts off completely in another 10 seconds and the window is still snowy or foggy,then it won't go back on at all till like the next day. Could it be the switch or the heat wires in the back winshield? Thanks.
 
I got a basically stock 89 SC and does anyone know why the rear defrost button lights up when I push it and then in about 20 seconds it dims real low and then shuts off completely in another 10 seconds and the window is still snowy or foggy,then it won't go back on at all till like the next day. Could it be the switch or the heat wires in the back winshield? Thanks.

sounds like a relay problem
 
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