I can't get the heater blower to work with the blower switch. I check the blower motor directly to the battery and it works fine. I replaced the blower switch and the blower resistor. And I've check if the wire are correctly hooked up. As far as I can tell they are hooked up right. (see picture of the back side of the ac/ heater switch) How can I check were I loose the power to find the wire error?
Where do I start?