I've been down this road, not pretty. If the switches you have are oval shaped with a green or red light on one side then we have the same ones. The extra wires looping around from one pole to the other are for the led inside the switch. I had new dash panels cut from inconel last year and had to figure where all the wires went as well. I tried just randomly hooking up wires to try and find the right combination. After a coupla boxes of fuses i figured out that that doesn't work too well. What did work for me was actually taking the switch apart and seeing how it works inside to get an idea where the wires should go. If you are reasonably mechanically inclined, this could work for you. If not, then i can shoot some pics of it next time i'm at the boat (coupla days). I do remember this though: The poles on the side of the switch with the led are the ground connection for the led itself. I THINK the middle pole goes to the striped wire from the fusebox and the other pole is connected to the blower, or whatever it is you're switching. The resistors connected to the load wire then kind of loop over the center poles to connect to the ground poles on the other side of the switch.
On the switches with 6 poles, they are used to switch two separate ciruits with the same switch. I think the bilge pump switch is like this. The top 3 poles are powered by the fusebox "bilge 1" and the bottom 3 are powered by fusebox "bilge 2." Bilge 1 goes to the factory bilge pump in the center of the boat while bilge 2 may not be actaully used, but the wiring should be there for a second bilge pump at the stern.
Sorry if i've only muddied the water even worse. The'res been quite a bit of budweiser under the bridge since i did this job.
If you need me to, i can post pics of mine in a day or two. I've gotta pull the dash anyway to troubleshoot my satellite radio.
Its really not as bad as it looks. Once you put it together a coupla times, it actually starts to make a little bit of sense.
One thing you might also consider is replacing the switches with something a little more modern. These switches are problematic sometimes and there is definitely better stuff out there. Just an idea i've tossed around for a project next winter. There would definitely need to be some modification to the original wiring, but I really don't think it would be too bad.
1992 Supra Mariah - Red
PCM 351HO 285hp - PCM 1.23:1 Transmission
OJ XMP 4 Blade CNC 13x15.5RH
"People do weird things to boats" -Unknown