OCD, no, I definitely won't be repeating that job again, nor again, nor again, ...
No exposed wires, or transmitter, was important. I just finished tapping-in the power cord to the cigar lighter's positive lead (blue/black), and ran the ground to the convenient nut on the driveshaft tunnel, just in front of the shifter (while replacing the center/front console). The camera's power adapter plug, now removed, had a glass fuse in its tip (unscrew the tip to reveal), so I put it in an in-line fuse holder. BTW, the center of the adapter plug is for +12VDC.