Caravan Split Charge Relay Wiring Diagram

In this episode paul and chris connect up the new auxiliary battery fitted to the l200 to the main battery using a split charge.

Caravan split charge relay wiring diagram. One should go in between the lead that goes from the starter battery to the split charge relay and one between the split charge. The most simple way to connect and disconnect the starter and leisure batteries is by using a battery isolation or master on off switch this just uses a high current switch to manually connect the batteries in parallel once the engine is running and allow charge through to the leisure battery and then disconnect them once the engine is turned off to isolate them and. A typical campervan split charging system has a device that connects the battery used to start the engine to the leisure battery when the engine is running. I am updating the caravan wiring as per your diagram above.

Straightforward to fit the smart split charge relay provides power to the caravan s 12 volt supply battery charging and refrigerator via a towbar s 12s or 13 pin socket socket not included. In some cases a split charge relay might be needed in order for the power to switch divide from charging a leisure battery and the car battery. I am wiring up the 12s towing electrics for my caravan year 2000 using the smartcom heavy duty relay 020867. With the screws provided attach fuse box 1 and fuse box 2 as close to the main starter.

The brown pin 5 in most cases is not used when wiring tow bar electrics and it is important to ensure that the white pin 3 cable is earthed. A super simple wiring diagram on how a split charge device directs power towards the leisure battery one it has been engaged. My towcar has a split charge relay fitted on the cable between the alternator and pin 10. Basic wiring diagram for voltage sense system 2 1 3.

Fit the 2 fuses in the fuse holders. The split charge relay switch will on and allow currant to flow through to the leisure battery when the voltage rises above 13 2volts. Welcome to raptor s garage. Recommended over the old fashioned split charge relay on modern vehicles as this self switching unit requires no connection to the vehicle alternator.

The relay outputs being for fridge 12v permanent live for internal 12v equipment or to charge caravan battery via relay in the caravan. Is there any point in leaving the split charge relay there as this circuit will only be powering the fridge.