If you look in the left saddlebag -- on the back wall closest to the rear tire, toward the front and about half way up -- you'll see a factory circle 'imprint' that's about 1" diameter. With the seat off you'll see approx where it comes thru and you'll realize it is a safe place to drill (carefully, slowly) a 1" hole for grommet and wires.
That's where my dvr for my dual camera system resides. Makes it easy to pull SanDisk for pic retrieval.
The hard part was routing the cable from front of bike to the saddlebag!