Nice I learned something here since I'm going to be doing this soon.

 

All fixed!
I LOVE YOU MAN

 

Vash,
I finally found the diameter needed for the Water Temperature Adapter that goes on the upper radiator hose. It's 32mm or 1 3/16". I'm using a ACautotechnic water temp adapter, part number GS-BW07-R. This adapter is tapped for 1/8 NPT for the Auto Meter water temp sender. It also has a grounding point tapped with a machine screw already on it. Hose clamps were included.

I could not use Xviper's tap in point for my water temperature sender as I'm using a Hondata gasket which blocks water going to the intake manifold.

Hope this information helps anybody else who's looking to install a water temperature gauge in their S2K.

Aloha,
Mike

 

Thanks for the info mice