In all Mercedes-Benz Marco Polos, Horizon, Activity and V classes, the 12 V socket in the centre console is connected to the ignition current, which makes little sense for campers

Here we rewire the 12 V socket of the Mercedes-Benz Marco Polo from the body battery / auxiliary battery to the 12 V socket in the centre console. This ensures that your vehicle will still start even if the ignition is switched off.