Extension kits for installation if you have a G8 trailer socket (13-pin socket, but with wires for trailer lights only) to upgrade to the G13 standard.

G13-ICM-ISO-EXT-KIT
Kit for an extension of installation with G8 socket (this mean 13-pin socket with lamp wires only) to "full" functionality of G13. Kit is projected for standalone operation. Kit include module (new construction) for an intelligent charging of trailer/caravan battery.
upgrade kit to the full functionality of the 13-pin socket supply voltage (+12V) is permanently brought out in the socket contains separately circuit for trailer battery charging managed ICM-ISO module (included)
G13-RELAY-EXT-KIT
Kit for an extension of installation with G8 socket (this mean 13-pin socket with lamp wires only) to "full" functionality of G13. It is compatible with selected towbar kits. Kit include relay for switching of charging battery in trailer/caravan.
upgrade kit to the full functionality of the 13-pin socket supply voltage (+12V) is permanently brought out in the socket contains separately circuit for trailer battery charging managed by relay (included)
G13-ICM-KIT
Kit for an extension of installation with G8 socket (this mean 13-pin socket with lamp wires only) to "full" functionality of G13. It is compatible with selected towbar kits. Kit include module for an intelligent charging of trailer/caravan battery.
upgrade kit to the full functionality of the 13-pin socket supply voltage (+12V) is permanently brought out in the socket contains separately circuit for trailer battery charging managed by ICM module (included)