I have been searching all the posts on the forum here and have a question,
my 2000 century beater has developed a right rear power window issue.it will not go up or down from the master switch or the door switch.all the other doors windows work fine,as well as the power locks.the motor works fine as I bench tested it.I have an idea that it is the harness under the seat/carpets as the floor is wet from winter snow and muck and so,thats where I am going to start to look due to the other threads I have read where the op'* were having the same issue specifically with the brown wire that has the corroded junction thread.

My specific question is,before I start tearing everything out,is the power window wiring harness on a 2000 century limited under the seat or under the carpet where your feet may be?.it is still winter and cold up here in the upper peninsula of Michigan and I am not going to mess with it until it gets into the 40'* and am compiling info for the future.

the only people that ride back there is our dog but,she likes to ride on the right side with the window down so,I did dago engineered it by taking out the motor,reversing the motor bracket and drilling a hole in the plastic panel,I used a 7/16 hex bolt in the regulator itself and with a stack of washers to keep the bolt in the regulator inside the door with a couple of jam nuts,We can manually crank the window down with a ratcheting 9/16 wrench!.,for now.

Thanks so much for reading this and letting me know where the harness may be.

The main body harness connects under the glove box then it runs down the pass side to the PS front door then the PS rear door then to rear speaker rear window defroster then to the tail lights branching off to the fuel pump in the truck area
It then branches off under the front seats to power the seats then to the DS front door then to the DS rear door then to DS rear speakers then the taillights.
It runs down the sides by the rocker panel.
Its all 1 harness I have taken out 3 of them.
Each door has its own harness you should start at the door that'* affected.
Unplug it at the door and check if power is going to the door first or unplug the switch and check for power at the switch.
It could just be the master switch in the DS door is bad !!!

There is 3 ground wires 1 DS rocker panel about middle of opening of the door
and 2 behind the top of the rear seat 1 DS 1 PS.
You must remove the seat to access those grounds.