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Trying to determine why the rear defroster on my hard top is not working on my Willys Sport that came originally from the factory with a soft top without a rear defroster button but has been subsequently upgraded by me to a 8.4 screen with dual HVAC controls and has the rear defroster button. All the wiring and connectors appear to be there. Dealership is stomped thinks it may not be a code modifiable issue with the ECM. My question is on the wiring diagram , it states that the relay is on the PCB. What does the PBC stand for represent in this case? Printed circuit board- where?
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