hello everyone, when i got my project car it came with the heater not working. i have decided to tackle this project and i have verified that the blower motor does work. i have also checked the fuses and verified that the fuse is good and power is running through it. i have checked the yellow wire that connects to the heater blower resistor and cannot get 12 volts no matter what i do. does this mean my problem is with the heater motor blower switch?