F115 tlr 2006 - need wiring help

I have a 1999 boston whaler that had a 1999 f100 TLR on it. I have the original analog trim gauge and original tach, the tach has lights for oil an temp.
I purchased a 2006 yamaha F115 TLR to replace the f100. It appears the old gauge wiring harness will not work to hook to new engine. Main harness works fine. Can I use the same gauges with an adapter harness of some kind? Do I need new gauges? thanks.

[boats.net]

The trim gauge will not work on newer motors and there are no adapter harness available to adapt older gauges to newer motors.
The easy way is to order 6YR-W0035-E2-00 multifunction tach kit. It has tach, trim warning indicators and hour meter built into it and comes with wire harness for your motor.

6y5-85335-00-00?

Some reading turned this adapter harness pn. Is this to hook a new tach to an old motor?

[boats.net]

That is the adapter harness to connect 2001-2004 multifunction gauge to 2005 and newer engine.