Caravan Split Charge Relay Wiring Diagram

A super simple wiring diagram on how a split charge device directs power towards the leisure battery one it has been engaged.

Caravan split charge relay wiring diagram.

With the screws provided attach fuse box 1 and fuse box 2 as close to the main starter. Recommended over the old fashioned split charge relay on modern vehicles as this self switching unit requires no connection to the vehicle alternator. I am wiring up the 12s towing electrics for my caravan year 2000 using the smartcom heavy duty relay 020867. Welcome to raptor s garage.

This is how you can install your split charge relay. In this episode paul and chris connect up the new auxiliary battery fitted to the l200 to the main battery using a split charge. The split charge relay switch will on and allow currant to flow through to the leisure battery when the voltage rises above 13 2volts. 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.

Fit the 2 fuses in the fuse holders. 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. 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. 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.

I am updating the caravan wiring as per your diagram above. 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. 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.

One should go in between the lead that goes from the starter battery to the split charge relay and one between the split charge. Is there any point in leaving the split charge relay there as this circuit will only be powering the fridge.