Hey Pete, congrats on the boat, my wife and I are also new to a 2002 282 this past spring. The switches definitely get faded, but I think we've gotten them all figured out. The 2002 manual isn't really useful for the details on your topic. The attached photo is a panel from a boat we looked at that was in a lift full time with limited hours, you can clearly identify the order of switches and their assignments. Our boat has the same layout for all the critical items. Nav/anchor, courtesy lights, fuel tanks, as well as the bilge pumps, water pump, raw water wash down, and live well are all in the same positions. I think the one that's hiding at the left position in the bottom row is the horn.
The way that fuel tank switch works is that it changes which fuel sender the Yamaha gauge is reading for fuel tank level. So once you've confirmed you've got good fuel you can use in each tank, you can switch from one tank to the other. You can only look at the fill gauge for one tank at a time. It takes maybe 10-20 seconds for the new sender to fully update the Yamaha gauge, there's some damping on both ends of the system I think. Most of the time though I keep solid logs of what fuel went in and how fast that fuel is getting consumed.
I don't have a solution yet for re-labeling our switch panel, but we were fortunate to put over 120 hours on the motors this summer and experience is the best teacher! Feel free to get in touch with any questions, I'll try to be helpful!
Bob.
