Atari midi trackball - help w/ wiring???

priglmeier

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Ok so there are 4 wires per trackball opti sensor PCB. They are Red, org+wt, black and wt + org. What are the specs on these? I can run a meter on them and do the manual work, but it would be nice if someone would help.

My guess is:

Plug 1
horz/vert #1
+ 5 DC Red
ground Black
horz/vert #2

Plug 2
horz/vert #1
+ 5 DC Red
ground Black
horz/vert #2

It is confusing to try and map out the wires. Not like a joystick.
 

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