The colored stripes indicate a 69 Ω resistor with 5% tolerance. (12*12)/69 ≈ 2.1 W.
Hard drives may not present a load on 12V all of the time; when they sleep by spinning down, they stop drawing power. But case fans operate consistently whenever power is on. It doesn't take too many case fans to add up to 2.1 W.
The stability of regulation can be tested using an instrument called a DC Electronic Load, which would be required to "check out" any modification.
It's also worth pointing out that some computers use the 12V rail to run the CPU, through a "point of load" (POL) buck regulator next to it.

Hey @davecom, something has been nagging @me in the back of my mind about your G4 Mac minis. While you’ve touted “upgrades” and “enhancements” and cleaning them to the “best of your ability”... it finally occurred to me that there’s been no mention of removing their CPU heatsinks, removing the old heatsink paste (and/or removing the foil pad) from these now near twenty year-old machines… AND then renewing the heatsink paste before reassembly and sale.

Do you perform this now long overdue task on each of them and have simply failed to mention it? If you have not done this, perhaps it is best that you do offer them all “as is”.

Caveat emptor?

Conversely, if you have renewed the paste… you should definitely mention that.

Hangs as in a total freeze (no mouse movement)?

It's included on the Apple Developer Connection CDs.

Make sure to look at the "Tool Chest" CD.
https://macintoshgarden.org/apps/apple-developer-connection-2001

Thank you!

Yeah it's scrambled for me too.

Which version are you running? FAT or Carbon? IIRC, some icons related stuff is also inside data fork(s).