I managed to drill the holes, finally, after much angst and procrastination.
I made a little perch to fit into the mirror mount, to set the heated gear controller on. This is the new wireless controller from warmnsafe.com. One dial will control the coax outlet I installed today. The other dial is going to control the heated grips, which I did not yet install. It turns out that this wireless controller has a failsafe feature - if the base unit gets no signal from the dials, it automatically heats at 1/3 power when you plug the heated gear in. I don't want my heated grips to always run at 1/3 power until I remember to move the dials to wake up the controller. So I will also need to install a switch somewhere. Almost makes me wish I'd bought the traditional wired controller - what is it with me that I always want to try this new stuff?
Anyway... at least the switch doesn't have to be anywhere super convenient. Hafta see if I can find something reasonably attractive. Also, I had to order some coax extension cords. I could use normal connectors but I decided to stick with the plug-n-play while I can.
I put the switch for my Denalis there, under the heated gear controllers. I used a ball of Sugru putty to make a perch for it. I put the lights in under the headlight, where there are all those mounts. I might change them later but that will do for now.
I installed my Flash2Pass garage door opener. It's supposed to be tapped into the high beams, you flash the high beams twice to open the garage. I couldn't figure out where to tap the high beams, so I tapped the Denalis. I'll flash those to open the door, at least until I find a high beam wire. It's been driving me nuts to not have the garage door transmitter, so I'm glad to have that working now.