[DonWG]

Does amperage go up or down when switching from a 12V system to 16V?

Do the lights get brighter or dimmer with 16V? Is more or less heat generated from a light bulb on 16V? If the answer is brighter and more heat, then you're telling me that particular electrical circuit is creating more heat due to higher amperage flow. A light bulb circuit is a very simple and basic electrical circuit. You have power (battery), wires, switch and load (the light bulb). Every electrical circuit has a load. The load is in the form of resistance to electron flow. Amperage, which is actually electron flow through a circuit, creates heat. The higher the flow, the higher the heat. That's why circuits that are expected to flow high amps are a larger wire. A high voltage wire can actually be small if the load resistance is high causing a low amperage draw through the circuit.