Another electrical question: How many amps?, New headlight switch, don't want a fire or melt down Options

[Krieger]

As some of you know my car has different "headlights" I no longer have the pop up style. The lights are in the turn buckets. I bought a 15 amp toggle switch instead of the stock unit. This is what I would like to run on my new switch, but I do not know how many amps these items will take: front and rear running lights, license plate lights, dash lights and the stock relay to trigger the fog lights (this is how I chose to power my new "headlights". I was using the original hot wire that was on the oem headlight switch. It comes directly from the ignition switch to the headlight switch. Maybe I should put a 15 amp fuse in line on that hot wire? Other minor issue is the toggle switch has two posts and I have 5 wires to put on one end...