I’ll have to measure to find the exact length but not more than 4’ including extra for getting around obstacles. The current wires run under the chassis. I am familiar with voltage drop and have used the online resources in the past. I have never replaced a converter though I added dc circuit to our old one. There is an old resource I read years ago called 12v life or something that had all the basics. My concern is that PD has instructions and videos for connecting to the distribution panel but nothing about the AC side. I have seen posts that mention adding an outlet for the 9100 and I have a circuit to an outdoor outlet that I could use. But is that necessary? I have time to figure it out. Can’t install until the new batteries arrive.