Well, let's take a look and compare the one you have with the original switch hookup. Where the fuse is (there wasn't a fuse with the original switch) is going to be hot all the time...that's so your dome light and brake lights will work even if your ignition is off. I'm not really a fan of having a fuse on the switch...too difficult to get to if something happens. At the back side, your ammeter will connect to any of the 3 holes there. Working counterclockwise, your parking lights will connect to the next one and the one to the right of that will be your tail lights. The one to the right of that goes to your dimmer switch and then working around the last one (counterclockwise and sitting at an angle on top) is your dash lights and the ignition light). Hope this is helpful.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end