Ok....I just accidentally came across a youtube clip showing the testing and operation of the Tilt/Trim pump.
It shows the 3 wires, (colour codes are different), however..the black is the negative and the other 2 are up and down.
They call this model a
Outboard 3 Wire. Prestolite Johnson Evinrude
I also found a wiring diagram that could equate to this particular wiring setup?
http://