How difficult would it be to convert this water heater, which does *not* come with a switch, from 12V to 6V? (By the way, my Victoria has a 6V alternator with positive ground. The slim design *might* fit in the floor, behind the stick shift with the water pipes pointing up.)
https://www.amazon.com/dp/B08CZTNDP8...v_ov_lig_dp_it
Would it just be a matter of replacing the fans? (I've searched, and I didn't find any fans that I thought would be suitable, but electricals are not my strong suit.)
Would a Model A 6V battery and alternator have enough juice to power two 6v fans?
Here is a unit that appears to come with a switch.
https://www.amazon.com/dp/B07K2CSQQ3...v_ov_lig_dp_it
Would that switch likely work with 12V and 6V?