proper water pressure in these mercs is important. mine runs at 11 psi at WOT. i plan on moving my volt meter and adding a second temp gauge. i do my water pump once a year just if it gets alot of hours or not. cheap piece of mind. since you have access to the sender just take it out and measure the tank depth and order from from wema and hook it up. problem solved for that.
denny i know that the switch option for the gauges is pretty simple but as you i like seeing alot of gauges and stuff moving too.