Power Windows

Reply Subscribe

Thread Tools

Search this Thread

Mar 25, 2008 | 09:42 PM

johnrem46

Thread Starter

Advanced

Joined: Mar 2008

Posts: 65

Likes: 1

From: Fairfield N J

Power Windows

I do not have power to my power windows!! When I connect the window to the battery they work. I checked all the fuses and they are good. I think I may have a bad power window relay does anyone know how to check the relay to see if it is good?

Mar 26, 2008 | 08:09 AM

BTAL

Race Director

Joined: Dec 2007

Posts: 14,345

Likes: 4

From: Hartselle AL

St. Jude Donor '09

I would check the switches first with a multi-meter. You'll probably find the problem there.

Mar 26, 2008 | 11:51 AM

7T1vette

Team Owner

Joined: Jan 2006

Posts: 37,637

Likes: 3,118

From: Crossville TN

The relay should send 12vdc out to the window motors when you depress the switch. Turn car to "on" [don't start it], set up multimeter for DC volts, connect + lead to the output terminal of the relay (the input side should have 12vdc on it all the time), and have someone depress a window switch. If that doesn't show any voltage, the relay is bad. If it does show 12vdc on the relay output, the problem is in the window switches or the wiring to the motors.

Mar 26, 2008 | 11:52 AM

7T1vette

Team Owner

Joined: Jan 2006

Posts: 37,637

Likes: 3,118

From: Crossville TN

I omitted that the (-) lead should be connected to a [known] good ground.

Mar 26, 2008 | 12:21 PM

'75

Le Mans Master

Joined: Dec 2007

Posts: 6,422

Likes: 591

From: McHenry Illinois

The power window relay should supply power to the window switches all the time the ign is on. From the switches the wires go directly to the window motors. There is a circuit breaker in the fuse box for the windows, it is in the top left just beneath the emergency flasher.

Mar 26, 2008 | 12:29 PM

7T1vette

Team Owner

Joined: Jan 2006

Posts: 37,637

Likes: 3,118

From: Crossville TN

That is correct. But if the relay doesn't supply the 12vdc, the windows won't work.

Mar 26, 2008 | 12:53 PM

Sully1882

Melting Slicks

Joined: Feb 2006

Posts: 2,092

Likes: 5

From: Fayetteville Arkansas

im listening too

If one window works and the other doesn't can you just try changing the switches to see if the switch is bad...??? I'm guessing they are reversible...right?

Sully