I got a ds door today, pw/dl power/heated mirrors. My truck has manual windows. I was quite surprised to find the factory wiring harness for the power doors patiently waiting to be used.

My question is, there are two plugs on the door, and only one coming out of the truck.

Is the one from the truck the "master" supplying power to both doors through the ds door? I'm guessing I need to get the wiring harness to go from one door to the other? Is that what the second plug is for? It's kind of hard to explain