Passenger window doesn't work

[SafariWagon]

What the master switch is not showing you in that diagram is there is a 6th wire that grounds the switch to the door. That's the wire that grounds everything.

 

[H2O gbodies]

By the diagrams the motors are grounded to the door. The switches have constant power and connects the power the appropriate wire.

That diagram is very misleading-apparently the only one that seems to pop up on Internet searches show the same one-it is 1978 only. 1979-88 have a black wire to the switch which grounds under the dash on a ringlet along with the other grounds above the kick panel under the 10mm machine screw which secures the lower LH side of the dash.

I build these harnesses NEW and the first time I looked at a 78 harness-it threw me for a second lol! 78-older power window switches on g and a bodies do ground to the door shell-but GM got a little smarter for 1979 and swapped to reverse polarity motors. You can tell 1978 by the switch itself too-it's stainless vs plastic.

 

[pontiacgp]

That diagram is very misleading-apparently the only one that seems to pop up on Internet searches show the same one-it is 1978 only. 1979-88 have a black wire to the switch which grounds under the dash on a ringlet along with the other grounds above the kick panel under the 10mm machine screw which secures the lower LH side of the dash.

I build these harnesses NEW and the first time I looked at a 78 harness-it threw me for a second lol! 78-older power window switches on g and a bodies do ground to the door shell-but GM got a little smarter for 1979 and swapped to reverse polarity motors. You can tell 1978 by the switch itself too-it's stainless vs plastic.

thanks for that info, now that you mention it I do remember a black wire on the harness for my driver's door window switch.