Expert: Tom Joy - 9/11/2007

Question
How do I test a blower motor that it's been removed from the vehicle.
A great site!! Thank you,


Answer
RED wire = battery voltage at all times.
Black wire = Ground wire at all times.
Gray wire is a variable voltage wire from 5 volts all the way up to battery voltage depending upon your fan speed selected which goes to the A/C PROGRAMMER and provides a volatge between 5 and battery voltage for the speed of the motor.