Subscribed since I'll be doing this for the 2nd time shortly.
First time, my tailgate wouldn't lock. Dealer wanted $375 to replace. Found a harness from a wrecked wagon, and installed. Worked amazingly for about 3 years. Now, radio is poor / weak, the door locks but the car doesn't read whether its open or closed (dash). The heating element doesn't work and my rear wiper is actually intermittent (i.e. it stops where / when it wants when you switch it off).
I should just replace the whole tailgate (seems almost easier) but looks like ill be replacing BOTH (Driver and passenger) harnesses to remedy this. Ba hum bug.