Pontoon Boat & Deck Boat Forum

I have an 88 suntracker bass buggy, it had a 35hp force on it, we upgraded to 60Hp mercury from the same year. I am re-wiring everything, i have all the accessories done, and on one battery I want to setup the ignition system on a separate battery. As of now the boat runs drives and all, but before i tear apart the wiring i want to be sure i know what goes where, the only gauge that works so far is the voltage. The wires coming from the engine wiring into the console are orange, white, green, light blue, yellow, red, purple, The red is 12+ and plugged into the ignition, the purple coming from there is connected to a grey and brown wire going to the tach, orange, kinda goes nowhere, light blue, white go to the ignition switch, there is another purple (separate from the one coming from engine, which i believe is 12V+ ignition. into the ignition are red, white, green, light blue, purple, and yellow. No wiring diagram i find has these wire colors, i tried Merc and Force from those years. I had a shop install the bigger motor. If you can help me identify these wires and what they are i would greatly appreciate it, i am sure if i get this in order the gauges will work. My ignition is a 6 blade with push to choke. I have attached photos of the wiring to see if any help can be given. Thanks in advance. 

Here are the photos.

You've got your work cut out for you. Here is a good article "14 steps to rewiring your boat"

https://newboatbuilders.com/pages/electricity13.html

here's pics of mine

This might help.

https://www.mtboats.com/wirecolors.html