Gt40, help locating a broken wires location

I have a 97 GT40 that I just bought, have yet to have it out on the water. The temp gauge and oil pressure gauge are both wonky so I removed the wires and grounded them out and got a full sweep on the gauge so I replaced both the water temp switch and oil pressure switch (both correlated to the gauges when the wires were removed so believe I replaced the correct ones). No change with the new sensors and the gauge reads the same.

Someone has done some previous rewiring on the starter relay and I noticed this broken tanish wire and I am trying to figure out where it's supposed to go? I think it might be part of the SLOW system limp mode and maybe why the gauges are off?

Hoping someone can trace this wiring on their boat and let me know where it's supposed to go. I have spent a while looking for wiring harness that show it but not a ton of luck. I appreciate the help.
Edit, guess my pictures are not showing. Let me figure that out

If you read the thread in the link below, it'll probably make you feel "less challenged" about water temperature senders/sensors. There are 3 total

In limp mode the Red dash light will be on and the engine will run normally till about 2700 rpm, then start cutting out.

Before you jump right in and ground the wire,  a safer approach would be to use a multimeter and check for/verify continuity between that wire and the wires at your switches for hi water temp or low oil pressure.

They should have the same tan/black wires

That way you have less chance of damaging something if the wire is for something else

See how it runs with the wire as it is now, with the bare end taped before doing anything that might cause damage.

In other words don't do anything silly that might damage your ECM with a voltage transient. That can get expensive