Thanks! It took a wee bit of time, but after cutting it out, I managed to carefully cut into the solid plastic connector joint and with my heat gun expose and prise away the joint board itself.
I was then able to see where the multiple joints were. I then matched the wiring and made the new connections with heat shrink wire connectors. I have taped them together and later today will seal it all with a larger diameter heat shrink tube.
Appreciate the advice.