If you're fitting a split charge system from scratch, your vehicle is relatively new and has a complicated engine management system we would recommend using the voltage sensing split charge relay which is easy to fit and requires no connection to the vehicle electrics. Simply wire the relay from your starter battery to your leisure battery. This also avoids any vehicle warranty issues.
Voltage sensing split charge relays and fitting kits are easy to fit as they only need wiring from the starter battery to the leisure battery/batteries. They are suitable for older and also modern vehicles with INTELLIGENT ALTERNATORS, CANBUS and MULTIPLEX wiring systems. With our range of volt sensing/sensitive split chargers there's no need to cut wires or take feeds from other sources (i.e. the vehicle alternator). Beware of other systems on the market that may cause electrical malfunction or invalidate the warranty on modern vehicles.
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