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  #1  
Old 04-12-2018, 09:00 PM
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76 280 c aux fan and ac and defrost motor

my defroster fan only turns on with ac temp control turned left defroster three speed all operate only thing is defrost speed control doesn't turn on engine bulk head fan when ac temp knob is moved to any other letter is this normal ??? aux fan yellow wire is cut and someone put a 25 amp blade fuse and ran to horns aux fan doesn't turn notice in wire diagram relay goes to aux fan . ac starter ?? will this prevent all blower motors from turning on the hot and cold blower doesn't move any setting and defroster only turns on with ac set to c symbol only plese help confused where to start
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Old 04-12-2018, 10:33 PM
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Quote:
Originally Posted by huffandpuff View Post
where to start?
1) Think about what you wish to say.

2) Punctuate.
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Old 04-12-2018, 10:54 PM
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How many threads are you going to start on this issue? Pick one and keep updating it!

Get a wiring diagram and make your system match it. If it's been hacked up, forget about it working properly unless you were the one who did it and know it worked properly.
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Old 04-12-2018, 11:12 PM
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76 280c defrost speed switch and ac temp switch

is it normal for ac temp switch to only turn on defroster blower ? when defroster speed switch is turned to 1 ,2 and 3 settings it operates under command and when turned to zero it does shut off inspecton station technician stated theres no defrost wondering why speed swith will not turn on by itself plesase help
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  #5  
Old 04-13-2018, 10:13 AM
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You need a wiring diagram, seriously. Asking questions is one thing, having the diagram in front of you telling you what wire goes where is far more helpful. The diagram will tell you what wire goes where and what switch controls what in which position.
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'11 Honda Accord EX - "The Daily" 64K
'83 500SL Euro - "The Money Pit" 116K
'86 300SDL - "The Diseasel" 186K
The Diseasel Thread - Everything You Didn't Know You Wanted To Know
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