Got sidetracked with a small problem this morning. I powered up the avionics to ops check something and was greeted with a sea of red X's. Audio panel, Comm 2, all engine monitoring, all off line. Took a while to think through, but finally I realized the only thing I had been monkeying with thaw as even remotely related was when I pulled the roll servo wire bindle into the wing. That component is also on the CAN bus. I realized I still had the ends of the CAN Bus wires shorting against each other where I had pulled that bundle and it was grounding outer CAN buss and rocking it' world. I spread all those pins apart and cycled the avionics and that problem magically went away. I find it interesting that a problem with the CAN buss can wipe out that much stuff and thought that it might be worth mentioning here for future troubleshooting for myself or others who might come across this entry. I pulled the camera wire from the r/h wing into the cabin. This was a huge hassle because I went in the wrong order. The video cable is tiny, but it has a plug on the end thats a bit bigger. My bundle of pulled wires had gotten big enough taht I couldn't get that plug through the bends between the wing conduit and the fuselage sides. I screwed around with this for over an hour before I bit the bullet and pulled the VOR coax out of conduit so I could get the video cable pulled, then reinstalled the VOR coax. I installed the camera on the inboard underwing panel with the idea that if the location looked good I might move it to an adjacent area of the wing and if it didn't I could just replace the panel and not have an extra hole in the bottom of the wing. The location looks like it will work nicely, but the wire connector is in the cabin and any time I move it I'll have to pull wire from the wing which would be kind of a hassle, so at least for now I'mm going to leave it there. Moved on to the left wing and installed the OAT probe under the wing in approximately teh same location, but with no plans to relocate it I went through the skin just near enough the inbd access as to be convenient for attachment and wiring. I was able to pull the wiring into the cabin without issue. I didn't get a picture of it installed, because Kris Holt showed up at the hangar to see the project. Kris is an A&P/IA that I just taught to fly. He's currently a field service rep for Lycoming, so I was looking forward to any insight he might have as to my engine installation. He offered to come back and give me a thorough once over when I was done, and while neither of us are expecting him to find anything, I'm going to take him up on it. I'm certainly not perfect and really believe that the more sets of eyes you get on something like this the better.