What I did was seperate the wires from the boot on the back side so you can push the wires ,contacts springs and divider disk to a position I can work with ,, cut off contact terminals.clean as necessary assemble and install new contact buttons..wires need to remain correctly oriented in socket so pay attention to that,, this way there are no butt splices... there are also little repair kits at the auto parts store that have the disk,springs and wires pre terminated that you can butt splice, you may still need these kits if your springs are rusted /compressed..
The button contacts I've had for years don't rember exactly where I got them but with some time should be able to find online ,,try 1156 bulb contact buttons or something like that to search.......
then at the end to reseal the wires at the boot I just used some black RTV and pinched down till RTV cured..
the sockets are resistence welded to the bucket more or less considerd perminate.