Pull on the passenger side of the back seat at the top. Have someone shine a flashlight in the truck directing the beam to this top corner. You will then see the light and where to fish the wire through.


After you get it through to the back seat, tuck it in the side of the seat till you get down to the door sill. Then just run the wire along the door sill till you are under the dash. You can tuck the wire under the sill without removing it if the wire is thin enough.

I hope this helps.