My heater switch only works on position #3 on the 1980 that my son and I are working on. The FSM says to trouble shoot the switch and/or the resistor. The switch is no problem to troubleshoot, but does any-one know what the resistor looks like and where it is located? That part isn't very clear.

Thanks!

 

on my '79 I had to remove the blower from under the glove box with a few screws and the resistor is up inside there at the top . I bought a new one but havent replaced it yet . I just temporarily wrapped the resistor wie back on itself for some quick heat

 

Awesome, thanks!

 

you're welcome , I think I got the new resistor from mazda for about $20 .

 

You can get those nichrome resistors at the Junkyard or the Pick 'n Pull.

 

i dont understand how you wrapped the resistor wire. i would like a temporary heat i'm havin the same thing with the resistor

 

it was the "spring" coiled wire part of the resistor that was broken in the middle of the coiled wire . I just tangled the ends together and that worked for now . Obvioulsy not a great fix , but worked for quick heat.

 

ok thanks will try it