My Service manual for 99 GTS shows for the Power Amp Connector C2 (Coupe):
3...2.......1
[] [] [w] []..............w=white
[] [] [] [] []
8.7..6.5..4
#1=low right rear (-) dark green
#2=left door (-) dark green
#3=left door (+) violet
#4=low right rear (+) violet
#5=low left rear (-) dark green
#6=low left rear (+) violet
#7=right door (-) dark green
#8=right door (+) violet
Connector C1:
....[ ]
[1]---[2]
....[3]
#1 = ground / black
#2 = fused B(+) violet
#3 =
