Don’t know yet if it can be done Peter, still looking into it.
Thanks for contacting Westech, looks like they are about the cheapest 6v units around at $100. From what I’ve found so far the next step up are the $170 units that ATP Instruments sell out of Bloomington, MN. Tim contributed this link; http://www.gaugeguys.com/Other%20Sales/sales6v&12.htm

Once again, I don't see why you couldn't use any of the cheap 12v units with a voltage booster, as our compadre 4ontheFloor pointed out in another thread.
The problem with using the booster is that it’s gonna run ya another $70 so that bumps ya right back up to that $100 mark and ya still have a cheap plastic tachometer. I would expect the unit Westech sells for $100 to be a much better product and ya won’t have to wire in the extra hardware. They have been around for years I believe that I've seen their gauges as standard equipment in lift trucks.
Anyway ya look at it right now, it’s gonna cost ya a hundred bucks to put a tach of any sort in your Six-Volt-Bolt.
Denny Graham
Sandwich, IL


Denny G
Sandwich, IL