I herculined my interior. I don't recall any wires being exposed other than under the seat and under the dash. I didn't herculine over the wires. I don't think that is a good idea. And since the wires can't be seen, it's not a problem just to leave them hanging.

Here's a little security tip....keep this a secret....if you leave the plug that is directly under the passenger seat explosed, you can reach under there and unplug it anytime you don't want your truck to get stolen. That's the plug to the fuel pump.

Works great!

If you're talking about the wires that run along the bottom of the door sill, you can leave the plastic trim in place to cover those or use some tape or something to hold them down. I still wouldn't herculine over them. When it dries it's as hard a rock.