Christmas lights are Christmas lights. The only thing you need to worry about is how many of them are wired in series on a given string. The AC or DC doesn't matter (in most cases for Christmas lights).
Let us say that an old light set you have laying around is 35 per strand. 110 / 35 = 3.2 V. So, you hack up that old light set into bunches of 4, so that these 4 can be powered by 12 V from the battery. Use a fuseable connection that, if it were to blow, wouldn't bring anything else down with it.
I used to use batches of 4 Christmas lights to provide under-dash accent lighting back in the day. I even had them hooked up to the dimmable instrument panel circuits in my old Buick.
Cheers!
-Doug
Let us say that an old light set you have laying around is 35 per strand. 110 / 35 = 3.2 V. So, you hack up that old light set into bunches of 4, so that these 4 can be powered by 12 V from the battery. Use a fuseable connection that, if it were to blow, wouldn't bring anything else down with it.
I used to use batches of 4 Christmas lights to provide under-dash accent lighting back in the day. I even had them hooked up to the dimmable instrument panel circuits in my old Buick.
Cheers!
-Doug
