They're just flat plates with 2 screws. Otherwise there should be 2 small hoses there. The wire in question would be coming out of one of the ports. There are like 5-7 screws that wires can be inserted into. If one of them is hooked up then it's probably the speed sensor. Although if Marthy's maps weren't being used when you got it then it's not likely to be hooked up. Only need speed sensor for individual gear mapping which is needed for Adv gear maps, but not the sport maps.Also does anyone have pics of the plates so I know what im looking for? Speed sensor hookup too. There is a wire running off of the pc5. Though I thing it 7s a ground and not speed sensor.