On my 2012 Ultra CVO, I did my Fullsac upgrade a few months ago, Fullsac DX headpipe, 2.0 baffles, screens and TTS Mastertune, the plug that you need to interface your Laptop with the Ultra is not under the Saddlebag, rather its under the side panel cover on the left side of the bike, as you sit on it, no need to remove your saddlebag. There are 2 connectors under that side panel, one gray and one black. To be honest, its been a couple of months since I did the upgrade, but I believe its the plug on the bottom, as they sorta sit one one above the other one. I am sure that another Forum member will clarify this, as this Forum is chock full of good advice !! BTW, I absolutely love the Fullsac upgrade, recently went to Colorado, up to the Summit of Mt Evans, 14,130', not so much as a miss, pop, hiccup or anything, Steve George's systems ROCKS !!!!! Good luck with your mod, you will love it !!!