>
> >Any other ideas on how to disable the heater fan so that it only runs
> >when I want it to . I find the fan and its draft to be an irritant. When
> >I want fan (air blowing ) I'll ask for it.
> >
>
> IF I were going to modify our rig, I would:
>
> There are two wires going to the fan motor, one is the ground and
> one is the 12v feed, find a place to mount a toggle switch on the dash
> , the switch MUST be rated atleast 20-25 amps, (I,ve measured current levels
> of 15 amps on the blower motor during cold weather startup, but the
> circuit on the 76 GMC is fused for 25 AMPS)
> Wire the switch into the HOT line, use connection wire of atleast one
> grade higher than what is used, to allow for current loss.
> Use 12Ga wire, I would cut the 14ga Purple wire leading to the hot,
> where it joins the black filter cap wire, and put the switch in series .
> This will allow a person to turn the blower off if so desired.
>
> LEGAL DISCLAIMER:
> You do this mod at your own risk. It is a safe procedure, if done
> properly. I accept no responsability for misuse.
>
====================================================================
I will go along with John's suggestion, as I did just that when my
blower stopped while on a trip and I didn't have time to track down the
problem. (My problem was the purple wires' conection to the relay) Make
sure your components are rated as John suggests.
I also second John's disclaimer statement......
HR in Indy
9675.0203
