Hello, I'm Danny.
Yes, It's that simple. The wiring harness is already included in the door jam wiring harness. I've attached the power window wiring diagram below. Feel free to ask questions on this site as I'm an expert on 1988-1998 C/K1500's. I've owned many.I know own an 1989 K1500 with only 90,000 original miles. Hope this helps and thanks for using 2CarPros.
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Tuesday, August 13th, 2019 AT 1:25 PM