1988 K20 suburban back window wont go back up using any switches

[MuddiGGEr25]

My nephew got the right rear side window to roll down while trick or treating and it wont go back up no matter what i do, and its going to be dropping below freezing agian soon.


I can only control the two drivers windows from the drivers door control.

Does anyone know which wires i can just connect 12V+ and ground to, and be able to manually send the motor and window up? I have a extra set of mini jumper cables and a spare truck battery to use so i can completely bypass the suburban wiring.

I already have the 5 wire connector hanging out

[Irish_Alley]

get a helper and see if youre getting any power to the switch then use the drivers switch to try and move it while probing the wires for power

[hatzie]

Download the 1988 wiring diagrams.  They'll show you what connections go where.