2007 Ultra. Going to buy a tuner. Went to check out the plug on my bike. It only has 3 wires going into plug. Only 3 pins in receptacle. Looks like 1 wire is dark green with purple strip? 1 wire is light green with purple strip? 1 wire is gray. The other hole is plugged. Plug has Deutsch/D104-4P. IPP-USA. Looks like. This plug is under right side cover. Pretty sure it is the correct one. Any input? Thanks.

 

That's correct. The data link only has 3 wires.. Colors are correct.

 

Max Headflow. Thanks.. Just now had time to look at schematic. Data link connector. Three wires. Blk/Gr wire.- Lght. Gr./V.- Grey.