Shifter Wiring 2008 50TLR

[FuzzyNavel]

Hi everyone, I bought a boat with no gauges so I am trying to decode wiring coming out of shifter to connect a tach as well as warning light(s) and/or buzzer for over heating and low oil. It's a 2008 50hp 2 stroke 50TLR. 2 harnesses coming out of shifter, first has 4 wires - yellow, black, red & green. The second harness has 2 sets of 3 wires - light blue, light green and orange.
I have many diagrams but they are for harnesses which I do not have. Appreciate if anyone can tell me the exact purpose for each wire.
Thanks

[99yam40]

red is battery power,
black is batter negative/ ground
yellow is key on power
green it tach signal
the blue and green it tilt/trim up and down.
not sure what orange would be, maybe faded out red

[FuzzyNavel]

Thanks, will get back on it tomorrow morning and see how far I get.