The ground wire for my driver side tail light is apparently insufficient for the current that the wire is supposed to carry. Based on what I could find on the web, this is a common problem with this model of car. The end result is this (although this is not a picture of my particular connector):
One solution on a forum is to splice into the ground wire and connect a "secondary" ground to a metal tab that operates as a ground. Here is the illustrative image for that fix:
Now, my question is, why just splice the ground wire? Why not just reroute the entire wire to that tab, and not have the ground wire included in the 8 pin connector plug?
The reason I ask is because the connector plug has been damaged enough so that there is no plastic insulation between the ground wire and the other wires. The other wires are fine as far as being insulated from each other; it's just where the ground wire goes that no longer has insulated "walls" in the connector plug. It would be easier to just remove the ground wire from the connector and have it attached to the tab. Otherwise, I'd have to get a new connector plug, reinsert all wires (including the ground), and then splice the ground.
Any thoughts?