'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?

Re: '80 heater switch mod?
 

I just clipped the yellow wire at the resistor plug. I no longer have low, but that doesn't bother me.

Re: '80 heater switch mod?
 

just a thought you could clip the yellow wire and run it to a toggle on the dash so you have low when you want it