will this work

[jlawson435]

you guys have helped me a lot on out Toyota's but can anyone help me on my son's car.
2000 Mercury Grand Marquis. Heater blower stopped working. The blower motor control module is probally bad but son does not have money to replace it. The EATC is OK. Can I go out to the blower motor and tap into the wires and run a new resistant switch into car and bypass the blower motor control module. When car is running you can turn on heat and place on defrost and you can feel warm air coming out just no blower to blow it out.

[Stillrunning]

Originally Posted by jlawson435

The EATC is OK.

Do you mean this EATC:
http://www.aircondition.com/dsmobileac/eatc.html

How do you know it's OK? Is there a manual setting on the ATC system?

Can I go out to the blower motor and tap into the wires and run a new resistant switch into car and bypass the blower motor control module.

I don't know that I'd "tap" into the wires for fear of back feeding electrical power to EATC. You might be better to just cut the wires to the motor and splice in by-pass power through a switch and an inline fuse to the motor then to ground. The problem you'll have is picking a motor speed as the existing system will have motor speed control resisters somewhere. Is the motor speed set by the ATC system as well?

How many wires does the motor have going to it?

[Zembonez]

Have you checked the blower motor itself for operation?

Since this thing is basically a Crown Vic there are zillions of them on boneyards. I'd fix it right myself.

[jlawson435]

cut the wires from the blower, ran new wire to postive + to 12 volt with fuse in between to a postive acces. so only has power when key is on. ran ground - to battery ground. we talked about a switch and son son just put in a toggle switch which will run the blower on high when ever on. Later when we have more time then order and get the switch you guys talked about. weather turning with rain and cold maybe some snow he just wanted something now that would work. after hooked everything up works great air, heat, defrost can still adjust temp control just blower on high which is ok for now. he said if he got to hot he could roll down the window or flip it off but at least he now has heat and a defroster. thanks for everything guys.