[Ron Ramirez]

Anyone have any tips of rebuilding a 4 pin speaker plug?

If you don't mind some heat shrink tubing, here is what I suggest:

Cut off the wires, leaving about 1 to 2 inches sticking out from the plug.

Connect your new wires, making sure the proper wire is connected to the proper connector on the plug.

Use heat shrink tubing to cover the joint as well as the old wire going into the plug. Push the tubing all the way into the plug as far as you can, then heat it to shrink.

This is how I repair those connectors, anyway. Easier than grinding off a long rivet, possibly damaging the fiber insulator which is already weakened from age and possibly damaged already, then having to find another long rivet to replace the original.