The Stovebolt Site Forums The Shop Area The Electrical Bay Non-Original Heater/Water Valve Question...

In the midst of rewiring my 49 '3600

The heater is clearly and obviously not original: I say that because the heater lines are not in the original place, they've been moved toward the center probably 6-8"; the motor seems to be 12V. That's fine... but there are also a set of wires on the LH (driver's) side one of which was hooked up to a hardware store rotary switch labelled "defrost"; the other one was hanging loose but had a broken aftermarket terminal on it.

So my questions:

1) One might tend to think these wires are for an electric heater control valve....am I right? (there is no manual defrost cable)

2) One might also make the assumption the wire that was hanging loose was for a ground? I'm asking because I hooked them up to a battery, but all I got was a healthy spark - couldn't hear anything.

3) Any idea what this heater is out of, so I can source parts if needed? (I know there's part numbers on there somewhere but I can't find them as it sits, don't really want to pull it at the moment)

Thanks!!!

I believe this is the heater you have. It is 1941-42 Delux Heater (has the defroster on it).
One of the wires is for the defroster motor, the other is for the fan motor. It requires 2 switches, a heater switch, and a defroster switch. Most aftermarket Chevy parts dealers have them. The heater is grounded by the mounting bolts through the firewall.
Harold

Wow, VERY interesting - thank you sir, very helpful. Every project has some stories behind it...

Clarification:
The 2 wires are correct. One goes to the heater motor the other goes to the defroster motor. Each requires its own switch.
Harold