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Old 11-25-2016, 03:28 AM   #1
Foureye71
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Dead heater fan

Hey all the heater fan in my 71 is in op at the moment, and while I don't mind it when its a little chilly out I do miss having the luxury of sliding the switch and getting warm air into the cab. I have already checked the fuse and the slot it goes into and it gets 12v to each side. From there I checked to brown wire with a voltmeter and no power was getting to the wire. Anyone have any ideas on why that is?
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Old 11-25-2016, 07:08 AM   #2
Toms67
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Re: Dead heater fan

Check for power at the switch. And also the resistor on the heater box.
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Old 11-25-2016, 12:45 PM   #3
VetteVet
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Re: Dead heater fan

Quote:
Originally Posted by Foureye71 View Post
Hey all the heater fan in my 71 is in op at the moment, and while I don't mind it when its a little chilly out I do miss having the luxury of sliding the switch and getting warm air into the cab. I have already checked the fuse and the slot it goes into and it gets 12v to each side. From there I checked to brown wire with a voltmeter and no power was getting to the wire. Anyone have any ideas on why that is?
The 14 gauge brown wire is the power input to the heater fan switch from the fuse box. If there is no power on it I"d check the back of the fuse panel for a broken connection or a broken wire on the 14 gauge brown wire.


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Old 11-25-2016, 01:30 PM   #4
kwmech
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Re: Dead heater fan

Check also the back of the ignition switch. Unplug the plastic connector and take a look at the terminals.
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Old 11-25-2016, 05:38 PM   #5
Foureye71
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Re: Dead heater fan

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Originally Posted by kwmech View Post
Check also the back of the ignition switch. Unplug the plastic connector and take a look at the terminals.
Which wire on the ign. switch would I need to look at?
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Old 11-25-2016, 07:34 PM   #6
jessemthompson
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Re: Dead heater fan

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Which wire on the ign. switch would I need to look at?
The brown wire on the ignition is for the accessories.
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Old 11-25-2016, 10:03 PM   #7
kwmech
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Re: Dead heater fan

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Which wire on the ign. switch would I need to look at?
Possibly the melted one
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