Caravan Split Charge Relay Wiring Diagram

Basic wiring diagram for voltage sense system 2 1 3.

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. 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. Recommended over the old fashioned split charge relay on modern vehicles as this self switching unit requires no connection to the vehicle alternator. 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. My towcar has a split charge relay fitted on the cable between the alternator and pin 10. Is there any point in leaving the split charge relay there as this circuit will only be powering the fridge. I am updating the caravan wiring as per your diagram above.

Welcome to raptor s garage. I would like to charge the caravan battery while driving using this relay. Most kits will also come with the instructions so you should already have a ruff idea on what needs to be done. 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.

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. This is how you can install your split charge relay. The relay outputs being for fridge 12v permanent live for internal 12v equipment or to charge caravan battery via relay in the caravan. Fit the 2 fuses in the fuse holders.

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. The split charge relay switch will on and allow currant to flow through to the leisure battery when the voltage rises above 13 2volts.