Wherever wire goes through body sheet metal it will go through a rubber grommet. You can tug on the wires to pull the grommet out, or you can pry it out with a screwdriver. Use a side cutter to cut half way through the grommet from the outer edge to the middle so the wires can be removed and new ones slid in. Splices outside the vehicle should always be soldered and sealed with heat-shrink tubing but I do that inside too. Never use electrical tape because it will unravel into a gooey mess on a hot day. Push the wires into the grommet so the splices are inside the vehicle, then pop the grommet back in. Use some black RTV gasket sealer from the Chrysler dealer to seal the gap where you cut the grommet and where the wires go through to insure no water gets in.