Removal of manual transmission cable to get to reverse switch

[7:34pm]

Previously posted in a dead thread.

Rat chewed through my reverse switch wiring, rather than getting a new one I'm trying to lengthen the original wires.

I have two questions first:
1. Both wires are black, does the order the wires go back together matter? Because it's too late now to tell which wire goes to which.

2. How do you remove the transmission cable that's directly above the reverse switch? This one may be simple, but just wanted to be sure before going ahead.

Thanks.