By the way I found this video which will help you. It is an older bike so the tank covers come off different, but the location and what the connector looks like is in the video, including the plug that seals the connector look. I think after seeing this video I took the finned electrical...
Hey, before the Amazon version was available I installed a GPS wired to this plug. It is under the tank where you say but is not connected to anything, it just had a plug in it to seal it. I was able to order the connector from here https://cycleterminal.com/090-connectors.html p/n MT-090-2 (...