Hi, just became a new member. I own a 97 Olds 88 Royale with 85K miles on it.
My blower has only one speed and its low. Checked all fuses and relays. They seem to be okay. Just replaced the resistor block and they check out okay. I'm guessing its the control switch. I am looking for a wiring diagram or schematic for the control switch to confirm the old one is defective.
Currently don't know which contact is which. Its -32 with the wind and I need more heat.

Thanks in advance

Claude