Our 2001 203 does not have a temp gauge or water pressure and was thinking of adding something that can help us out there. I hear there are lots of options now even to include in your Humminbird. In your opinion what is the best way to go. Currently have 1197 on the console but may upgrade to 10 inch mega si gps g2n.

thanks for the assist

Oh have a 2001 merc 225 efi