This is the most basic type of switch the onoff rocker switch as shown using ozniums black anti vandal toggle switch mounts in 16mm or 19mm hole. An illuminated rocker switch is like a spst toggle switch with an extra terminal which allows the light to work.

Illuminated On Off Rocker Switch With Wiring Products Youtube
Marine raider illuminated toggle switch wiring diagram. Or these terminals can be ignored for non backlit switch banks. Marine electronics forum help wireing a illuminated spdt. Wiring a toggle switch for boat lights car lights diagram rocker switch wiring marine raider illuminated toggle. It is not for the ground connection on the nav lights. The ground connection on the switch is for the internal lights only. The wiring diagram to the right will show how to wire and power this 12v 20amp on off on 3 way carling contura rocker switch.
It has just 2 prongs. When wiring this switch you can choose if youd like to illuminate it because of the independent lamp attached to terminals 8 and 7. An illuminated design helps you see the switch in low light conditions. The switch is made of high impact plastic for durability and the paddle levers fit panels up to 14. Heres their pdf file that shows wiring information. How to wire a on off on lighted rocker switch ground is ground wherever you find it.
Ozniums rocker switches can be hooked up to any 12volt source everything else is pretty self explanatory just follow the rocker switch wiring diagram and you can. Also relays can be used to switch higher draw accessories to reduce switch load and voltage drop. I had a toggle switch that wasnt being used so i went and got this switch. The marine raider onoff illuminated toggle switch features a universal design to fit most boats. You might want to review the article on toggle switch wiring before proceeding. What you described should work.
You may need a jumper wire on that switch unless it is specifically designed as a navanc switch.