Some gauges do not work?

John,
You'll need to start by checking several things with a volt meter. Do you have one? A wiring diagram may come in handy too. There is one in the reference section. The one appropriate for your boat would be in the older PCM manual. Sounds like you do have voltage to the hour meter. It's working and yes, if you turn the key on and off it will register. get back to us and we can walk you through some testing.

Welcome to CCfan. Where are you in Chicagoland? If you'd like to keep it private, you can email me via my profile. Maybe I could take a look and lend a hand. We also have a group of CCfan'rs that meets for a few beers every couple of months. Keep your eye on the "Chicago beers" thread in the off topic section.

John,
Did you find the wiring diagram? Start with making sure all the gauges are getting power. Then remove the sender wires and check for resistence to ground.

I ended up having to put new terminals (sta-cons) on most of the behind dash wiring. Lots of corrosion due to the poor quality from the factory. The .250 quick connects were the worst. Most were actually broken because the females had become brittle.