Ok, stupid question of the day, but can I run the gas gauge in my '40 pickup on 12 volts without a voltage reducer? I was told that since the sending unit basically just acts like a switch that it wouldn't matter. But since I hate doing things like setting my own truck on fire due to dumbass wiring mistakes on my own part, I thought I'd ask here first . . . For what it is worth, I am hunting down a factory '60s Ford pickup reducer, but I need a gas gauge to get to Vegas for VLV this weekend.