Caravan Battery Wiring Diagram. If you intend to use the awning light option you should now trace the return wire from its onoff switch and cut it. 12s pin 4 must be permanently live for both battery charging and interior light etc functions to operate.
Connect negative ground wire to the starting batterys negative terminal. This is a design guide for 12v systems or dual battery systems used in vehicle setups for touring and camping. There are some manufacturersretailers who supply a tow vehicle wiring harness kit which makes life considerably easier especially as the wiring harness kit can be supplied for specific vehicles.
It must be remembered that the mcb fuses are purely to protect the caravan wiring against overloading and must not be.
If you intend to use the awning light option you should now trace the return wire from its onoff switch and cut it. Connect a length of wire to the return wire from. Use the correct size cable for the plugsocket most standard plugs will accept up to a 4mm auto cable easily. Each wiring diagram provides.