does this look like the ones ye using? i used these a few years ago, ( only they were the momentary ones, 7 prong like u suggested)
http://www.jmsonline.net/SWITCH-CONTURA-OFF-ON-BLACK-3133.htm
mine had 4-3 prongs, i used the middle on the 3 prong side. you can always test it on yer battery, ground and positive til it lites up as well.
if these arent the ones your requesting help on, i apologize man