Heater fan

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Copymutt

Full Access Member
Joined
Jan 17, 2020
Posts
192
Reaction score
573
Location
Colorado
First Name
Jim
Truck Year
74
Truck Model
K20
Engine Size
350
Already scrolled thru 20+ discussions and no mention of this.
74 K20, heater control worked as its designed-low medium high speed fan.
In the process of painting firewall I see the 3 wire connection at the fan box has a low resistance coil of wire between 2 leads. There’s also a cut wire going to the third terminal. What’s up w/ that? Must be factory for different set up?
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