Mercedes Benz Sprinter Van OEM Dash Switch This product is compatible with all Sprinter Vans made between 2007-2019. This includes both the 2500 and the 3500 versions. Please note that this item only ships free to the Contiguous United States. It does not include Canada, Hawaii, Alaska, or the other USA territories.
This switch is typically used to power any light system that didn't come with the vehicle. This typically includes external lighting systems. This switch will fit into the extra slots that are to the right and left side of your steering wheel.
Which pin is which? View below
Pin#1 is power
Pin#3 is power for the light
Pin#7 is the load
Pin#10 is ground
You can just put power to Pin#1 and jump it to Pin#3. You do not need to run an extra wire just for the light.