Hi, Can anyone tell me the location of the Power Windows Relay on the !991 Maxima?

 

is it just one window or all of them? i think theyre all tied into one circuit, that if one window switch is disconnected nothing works, not a single window nor power lock

also, looking for the relay diagrams in the service manual, will post if i find it.

 

Can you be more specific? About the issue?
Try the individual switches. If that works then it could be your regulator.