from the dash there are two grounds
lt blue/blk goes to fuse #14
blk/wht comes from fuse#12
blk/wht splits in two
from the dash to tail gate switch is pink/lt grn for down
from dash to switch is pink/ltblue for up
from switch to motor is yel-red for up
from switch to tailgate sending unit istan-blk
and from sending unit to motor is red-yel