The WARN Dual Battery Control Kit lets you use two batteries, saving the main battery for essential funtions like starting. Get maximum power during winch power operations. For use with 12 volt accessories. Minimizes charging system overload. Easy to install and includes all necessary hardware.
WARN 120 Amp Dual Battery Isolator
DUAL BATTERY ISOLATOR Because of the increased demands a winch and other accessories place on the DC power supply, many vehicles have multiple batteries-one to start the engine and another to power accessories. The WARN battery isolator prevents the problem of multi-battery drain. So no matter how drained your accessory battery becomes, it will never drain power from the battery you're depending on to start your engine.
Bully Dog Triple Dog GT Gas Gauge Tuner 2005+ Nissan Xterra
The GT-Gas is an all in one downloader, monitor and tuning device. The GT Gas features multiple power settings with the ability to adjust drivetrain and user settings. In addition, the GT line features all of the same gauge/monitoring functions as well as the advanced driving coach software aiding drivers in maximizing their fuel economy.