Pontiac Repair: rear window defrost relay, rear defroster, gauge wire

Question
QUESTION: We have checked switch, we have checked voltage we have checked wires and determined the reason why the rear defroster is not turning on it needs a relay.  Where is the relay located?

ANSWER: Model and year of this?


---------- FOLLOW-UP ----------

QUESTION: 2000 Sunfire

Answer
This does not have a relay. It's part of the HVAC control head. you need to check the power comming out og the unit. Usually what happens on these is they burn up an wire connector somehwre between the control head and the rear window. there are a couple of inline wire conenctors between the control head and the glass and if any of them has a loose fit the amount of current in the wire going to the window casues the connector to burn up and melt. the ouput to the defogger is a purple heavy gauge wire check the power out there if you have it ther tyour going to have to trace that though the dash and to the back window. good luck :-}