I opened up a tube of seam sealer, I had the option to buy brush on or caulk tube, so I went with the black caulk tube. I think I might order some of the brush on and see how it works, I'm nut sure the caulk gun method is always the best for what I need to do.
This image has black seam sealer on black por15, so its a little hard to make out, the short is there is a patch panel, por 15 over the area top and bottom, and then seam sealer over the weld area. The seam sealer came out in in long strands from the tube, so I spread it around evenly with a wood paddle to flatten and smooth. It seems to cover pretty well and the consistency and rubber pliability look good long term. Its a urethane product so it should hold up well long term.
I dug the body harness out of the mess of stuff in the bed, I need to make some modifications in the rear section. The white plugs in the lower right of the image are usually behind the plastic which is under the spare tire carrier. These plug into the turn signals and factory wiring harness for trailer lights.
The MJ uses a different tail light setup than the XJ - its the same as what the XJ wagoneers had. This is more what trailer lights are like, or older vehicles. So the brake and turn are combined into one bulb.
I need to do some rewire work, including what I will do for trailer lights, and shorten the wiring to sit in the cab as those connectors are not weather rated. Right now I am planning to put them in the drivers rear void space behind where the stock rear speaker sits. Then I will tie that in with the factory plugs to the MJ rear harness that exits through a rubber grommet in the floor.
