Okay, here's one way.
Instead of one 12V battery, get two 6V batteries.
Hook them up in series. i.e. connect the negative post of battery 1 to the positive post of battery 2. Now, from the positive post of battery 1 to the negative post of battery 2 is 12V. The negative post of battery 2 is ground and the positive post of battery 1 is your 12V positive connection for your alternator etc. The trick is that the positive post of battery 2 is now the 6V positive to run your gauges!
Just be careful not to let your 6V positive come into contact with your 12V positive because it will cause a dead short across battery 1.
Another way to do the same thing is to get a 12V battery with the bars on top. The six bars are actually jumpers connecting what is in essence six 2V batteries in series to make 12V. Drill & tap the center(middle) bar and you've created two 6V batteries like above. The tapped connection in the middle bar is the 6V positive connection for your gauges.
Pretty slick, huh?
Instead of one 12V battery, get two 6V batteries.
Hook them up in series. i.e. connect the negative post of battery 1 to the positive post of battery 2. Now, from the positive post of battery 1 to the negative post of battery 2 is 12V. The negative post of battery 2 is ground and the positive post of battery 1 is your 12V positive connection for your alternator etc. The trick is that the positive post of battery 2 is now the 6V positive to run your gauges!
Just be careful not to let your 6V positive come into contact with your 12V positive because it will cause a dead short across battery 1.
Another way to do the same thing is to get a 12V battery with the bars on top. The six bars are actually jumpers connecting what is in essence six 2V batteries in series to make 12V. Drill & tap the center(middle) bar and you've created two 6V batteries like above. The tapped connection in the middle bar is the 6V positive connection for your gauges.
Pretty slick, huh?