pw520a 19 Report post Posted February 1, 2011 hello guys, I have installed my lower dash with my original wiring and I have identified an hooked everything up. I purchased a new under the hood harness along with a new big block gauge harness. I purchased the car in parts so i am not sure where the fan motor hooks up to the harness. I have seen pics of a red wire coming from the fire wall above the heater motor, where does that wire go maybe it is for a 351 only I dont know. any help would be appreciated. thanks Gary on whidbey island Quote Share this post Link to post Share on other sites
murphsmustangs 10 Report post Posted November 25, 2014 It plugs on the blower motor resistor located on the heater housing. Use the terminal that is not used by the motor speed control plug that also plugs into the resistor. Quote Share this post Link to post Share on other sites