Heater blower question


New Member
Jul 29, 2010
Hi guys, my son just called and said the heater fan would not shut off, so he unplugged it under the hood so it wouldn't kill the battery when he was getting a haircut. He called me back 20 minutes later and said he plugged it back in and now it wont come on, any idea's where to start looking for the issue?
Looking around I'm thinking it may be the blower motor relay crapped out, is there a diagram as to where this is, also is there a decent wiring diagram for an 87 GN here somewhere?
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