Hello and welcome to JustAnswer!
Have you checked fuses?Do you have a voltmeter or test light to do some testing?
The resistor is tested with a voltmeter or test light. How did you test your resistor?
The resistor can cause any combination of motor speed loss, and a visual inspection won't always tell you anything about it's condition.
Would you like to get hold of a test light or meter so we can diagnose the actual problem? You should be able to pick up a cheap test light for under $10.
I'll walk you through everything you need to do, nothing to worry about.
The first think I'd like to do is go out to the blower motor and unplug it. Ground the alligator clip of the test light, touch the probe end of the light to the terminal in the motor connector on the dark green wire. Turn the blower motor on high and turn the key on, see if the test light lights up.
If that's ok then move the alligator clip over to battery positive and probe the black wire in the connector and see if it lights up.
Let me know what you find for both and we'll go from there.
Yes, just come back and reply to this same question with your findings and we can take it from there. I'll be online all day tomorrow.
That would mean you had two separate problems if you did it correctly. It's possible but not that likely.
Attach the alligator clip of the test light to battery ground and then probe the positive battery terminal. Does it light up?
Leave it clamped to battery negative post and turn the key on. Turn the blower motor switch to high and probe the wire in the motor connector on the dark green wire and see if it lights up. If not, go about three inches up from the connector and pierce the wire and see if it lights up there.
Yes, I'll be here all day. If you can't reach the blower motor for some reason while clamped to the battery post just make sure you're using a good grounded unpainted metal part to ground the alligator clip.
We're going to need to go to either the ignition switch or the control head on the dash next and check for power. Let me know whichever you prefer to take apart and I'll tell you what to check.
Ok. Let's go ahead and access the control head then. Once removed find the black/tan wire and see if it has power with the key on.
Correct, it's the control on the dash where you turn it on.