I hope someone can help. I have a 2012 Ducato Maxi and I'd like to get power to the 3 pin connector behind the RH rear pillar grill, just behind the rear light cluster. There are 3 wires: black/yellow, yellow and a black. It looks like it would be for a cigarette type power socket as there is a circular indent in the grill panel on the inside. I've searched and searched this forum and tried all the unused fuse/relays places I can think of but no luck. I downloaded the training manual, but the fuse box looks different than the one shown on in the manual. I hope someone can help