Hi QGN, is this about the 10 Wide Glide you are talking about in your other posts?
You might want to go into Account Settings and create a Signature which will show at the bottom of all your posts with some pertinent information about your ride (when you discover it) if you are going to be asking questions about the bike. It will keep people that want to help from just throwing stuff at the wall, or having to ask what you are working on every time. To get there, look at the banner across the top of the page on the right side where your avatar is and click to get the menu.
You can see the rear O2 sensor in the first pic and the front one in the 4th pic. Is there any sort of wiring connected to them? There should be a pigtail coming off the end of each sensor with a 2 pin connector. If they're not connected to the harness, they should be tied off somewhere that they won't just flop around. Does the wiring look like it will stretch far enough to reach either sensor?
In your snooping, have you looked for some sort of piggyback tuning module under the seat or behind the left side cover, where most of your electrics are located? There might be one, or maybe not as most modern tuning is done internally to the stock ECM.
Harley-Davidson® Parts and Accessories 2010 Harley Davidson (onlinemicrofiche.com)
If you've never been here, you might want to save this link for future reference. It's almost as good as having the parts book for your bike in your hands.