Hey guy's, I picked up a 1946 Ford and 2 speed 6 volt heater. My 46 has a 12 volt system, have any of you guy's used a 12 to 6 volta Drop successfully with a heater? I thought if I fed it with a fused dedicated 20 amp 12 volt circuit with a 6 volt runtz type volta drop would be OK. However I was just told I needed to use the new digital type volta drop type unit that comes with a small box to ease the load to the heater. What do you guy's think? Should I include a relay in this system? If so, should it be a 6 volt relay installed between the switch and heater?