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Old 01-26-2010, 11:50 AM   #1
dyno
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Join Date: Sep 2008
Location: Middleton, Idaho
Posts: 352
'80 heater switch mod?

Hi,

My heater fan runs all the time in the off position. I unplug the 3 prong connector from the resistor on the firewall under the hood and it turns off, but I only have single speed.

Is there a mod to fix this?
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1958 GMC 150 4x4 in progress
1980 K20- Restored
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58 GMC 4x4 build thread:
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