Trying to find specs of this Teleflex electronic control

It's on Bayliner 2556.

Engine Mercruiser 4.2 D-tronic 250 with bravo 3, year 2006.

I'm looking for this boat.
 
Anyone know what model this is for?
That's a Teleflex electronic engine control, from the olden days (my guess would be late 90s). I have the box that goes at the other end, with the electronics and throttle/gear actuators, but no controls. I would love to know more about this system - in particular the pinout of the controls!

TFX engine control unit.jpg
 
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