my Haynes says...
white/orange is shared on the left
pink/red + white/orange for left turn
white/tan + white/orange for left stop
white/red for both side backup.
black/orange for left ground
purple/grey is shared on the right side
white/orange + purple/grey for right turn
white/tan + purple/grey for right stop
white/red for both side backup.
black/brown for right ground
It is too dark to go take off the tail light assembly and look for myself, but it is quick and easy to take it off and look at the wire colors.