Dual Batteries & Switch

[hemrides]

Does anyone have dual batteries and switch setup? If so can you provide some details?

1. What brand of switch? What ones are better & why?
2. Did you have to install a different alt. to handle the extra load.
3. Battery Type

I have a 2004 TJ stock Jeep. It has a second battery tray already installed on the drivers side.

Thanks,
Dave