I was installing my voltmeter, during the install i decided to remove the dash pad center light to clean it. when i removed the light housing it was stamped "12V" on it. I was planning to replace the bulb with one using leds that i have. So when i saw 12V on the housing i was puzzled. I thought that only the head light were 12V. Well i was wrong, after checking the electrical scheme. I realized that the cluster light and the dash pad light also use 12V. Now no wonder why even on a stock rig batteries would not last very long. bad design, why didn't they go with 24v blub? Granted some will say we are talking about 20-30 watts here, still it is draining more current on the right side battery. Having known that i would have wired all my autometer lights to those! in fact, i'm thinking seriously about doing this, all the gauge light will dim just like the dash light. Isn't that sweet! But put more unequal current on the right side battery. Or install a new dimmer just next to the head light knob and wire all dash light to that one, and it would be hooked to the converter.