Electrical component - what is it?

Pretty sure that is a resistor that slows the fan speed when switched to LO.

quote:

a resistor that slows the fan speed

Agreed, but not sure this piece is the stock resistor?

Larry

It is the same as the one that came off of 7102, no longer needed with replacement blower motor that controls speed from taps off the motor windings.

quote:

Agreed, but not sure this piece is the stock resistor?

Yup! It's the stock resister, but seen from the underside in this pic. I removed mine when I installed a replacement 3-speed heater blower motor because the resistor is no longer needed.

On the wiring diagrams and info I found, this AC/Heat Blower Motor 2 speed resistor is shown as integral to the blower assembly and with Red/Black wires.
Thanks for the info. Nice to know what this really is.
I've seen discussions that imply I would have to remove the dash to replace the blower motor assembly. Can it be removed without tearing the dash apart? I also assume I would need a different switch for a 3 speed blower.
Thanks
Norm

The blower motor on most Panteras CAN be removed without disturbing the dash. I've done it twice on a '72 L with the early dash. That fable was spread by people with fat hands and an inability to work blind, as you cannot see the bolts holding the blower mount or fan ducts so must work only by touch. A set of 1/4"-drive metric sockets is essential. Send the kids away 'cause swearing helps, too! There's also much fiddling needed to clear the motor and dual squirrel-cage fan assemblies from their ducts during removal.

The plastic fans are brittle and very fragile- easy to crack one which throws the assembly out of balance and causes noise & vibrations. It's also extremely easy to reassemble the fans on the motor shaft backward or to install the assembly end-for-end, such that it works perfectly but blows no air. Reversing the fan leads does not fix this on a squirrel-cage fan assembly. I think Mike Dailys 'Panteraplace.com' website has a detailed description.

I will also say that although it is possible, it's far quicker to just remove the dash. That gives you the opportunity to fix other little things in there that is otherwise impossible to reach: duct-tape up air leaks in the steel AC/heater box, replace the age-rotted foam doughnuts between dash & AC box, and even "port-match" the holes in the dash to the holes in the steel box- which are usually off by as much as 50% of the open area. Repositioning the steel box on its tab-hangers on the firewall helps efficiency, too. Note that the dash need not be completely removed- only pulled away and laid across the seats- which can also stay in place.

I don't believe there is a stock, or even stock appearing, off plus 3 run position switch.
Use the stock dash switch and pick two speeds you like, or you could let the first position of the dash switch feed a hidden second SPDT switch to let that dash switch position control the two lower speeds by flipping the hidden switch while the second position of the dash switch turns on the high speed. That's how i did it.
Removing the dash was a chore but made the blower swap so much easier and you'll find a bunch of details to tidy up back there while you've got it opened up.