78 Blazer, factory power windows. I got in the truck this morning, rolled the windows down, it started raining so I rolled them up and turned the wipers on. Drove to the coffee shop and it stopped raining so I rolled the windows down again. Get my coffee get back in the truck, drive to my shop and the windows wont roll up.
Pull the door panel, inspect the switch by pulling it apart, seems to be functioning properly but I get nothing. So I jump the wires to the motor(at the switch) and both windows roll up just fine. Whats weird is, there is power at the switch, verified by multimeter, when the ignition is on and no power when ignition is off so theoretically its functioning properly. Both driver and passenger door window switches are relatively new. Is there a power window relay somewhere that I cant find?
Even if there is a relay, that doesnt really explain my problem because there is power at the switch. The red wire is the hot coming in, it has power when ignition is on. The switch seems to be in good working order, contacts seem to he contacting. Why would it not work? Its actually a very simole switch. Bad ground? I checked the grounds coming out of the window wiring harness where they connect on the drivers kick panel and they look good. Im lost.
Also, of course there are no window switches in stock in Phoenix for a 1978 Blazer and Im supposed to go on a 3 day camoing trip tomorrow. There are switches in stock for newer trucks but they have 6 pins in the back instead of 5 like mine. Im tempted to pick one up and see if i can make it work anyway. Anyone done this?
View attachment 515822View attachment 515823View attachment 515824
Pull the door panel, inspect the switch by pulling it apart, seems to be functioning properly but I get nothing. So I jump the wires to the motor(at the switch) and both windows roll up just fine. Whats weird is, there is power at the switch, verified by multimeter, when the ignition is on and no power when ignition is off so theoretically its functioning properly. Both driver and passenger door window switches are relatively new. Is there a power window relay somewhere that I cant find?
Even if there is a relay, that doesnt really explain my problem because there is power at the switch. The red wire is the hot coming in, it has power when ignition is on. The switch seems to be in good working order, contacts seem to he contacting. Why would it not work? Its actually a very simole switch. Bad ground? I checked the grounds coming out of the window wiring harness where they connect on the drivers kick panel and they look good. Im lost.
Also, of course there are no window switches in stock in Phoenix for a 1978 Blazer and Im supposed to go on a 3 day camoing trip tomorrow. There are switches in stock for newer trucks but they have 6 pins in the back instead of 5 like mine. Im tempted to pick one up and see if i can make it work anyway. Anyone done this?
View attachment 515822View attachment 515823View attachment 515824
