Blower Switch

[J Boyle]

My Avanti heater blower only works on high.

The switch may be dirty (I wonder why, the car's only 45 years old!). or I might need a switch.

Any guesses which it might be?

If it needs replacing, where can I get a switch?

TYwo foirms sell part 1561930...a part common to the headlights, instruments lights and heater...but my parts book says it's only good for cars 4879 and later. My car is 2788. Will it work?

The parts book says 1557419 is correct.

Help!

Yes, I know I posted this in the 63-64 board as well...I just want it to be seen by as many folks as possible.