The area both statements are referring to under the driver-side wing, close to the front jack.
This is the area on my 2001 1121, and those two bare copper wires hanging down are the ground wires. They normally are connected to the small sheet-metal plate closest to the jack hinge, but I've been working on this area so they're disconnected right now. And, I can attest to the fact that the exterior lights on the camper don't work with them disconnected.
Hope that helps.
:):)
2001 Lance 1121 on a 2016 F450 ‘Scuse me while I whinge.
And for all you Scooby-Doo and Yosemite Sam types………..Let’s Go Brandon!!!