AC Low Power Light?

[Professorbob]

I have a 1992 Champion Chase Commander with a Dometic Penguin Roof AC. It performs fine until I try and up the three speed blower motor to fastest position. Does anyone know of a source for trouble shooting documents that would allow me to determine why the low power light glows and the blower motor quits when I shift to the high position. I have replaced both starting and run capacitors with no change. The compressor and fan perform as designed in the low and medium position. Just quits when I switch to HI. Thanks in advance for your help.

[drdarrin]

Sounds like a voltage problem to me; higher the load, lower the voltage. Have you tried checking it when AC is off, low, medium and high? If the voltage does drop much, I'd look for a loose or corroded connector.

Another possibility is a bad switch.