[SVAuspicious]

Lessee... red = pos. (yellow in newer boats?) black = neg

Red is still positive. Yellow is in the newer ABYC standards for negative as a replacement for black in order to avoid confusion with shore power AC (white and black).

 

[SVAuspicious]

where to get a rheostat?

Radio Shack, DigiKey, Mouser, hamfests ... may be listed as a potentiometer.

 

[SVAuspicious]

Like my paper tape wire markers? I'll get real wire markers next week sometime.

Good for you - never let the lack of the best solution keep you from labeling.