I recently spilled coffee in my dash, yeah I know that was a bad thing to do.... Anyway about an hour later speed 3 on my blower dropped down to speed 2. Speed 1 works like it should and speed 2 is normal and speed 4 blows like no tomorrow but it is just that I lost the 3rd position it is the same as 2. This is all manual control no digital.

I checked the speed switch and it is fine. I noticed the resistor pack? that screws and slides into the duct and has the power wires from the speed switch connected to it and was wondering if there was a way I could manually test this with a multi-meter. i.e. check resistance from pin to pin?

Any help would be appreciated.