I ordered my Tesla Model S . While waiting I have been buying all the accessories I plan on installing. I will be putting the dashcam 650s-2ch (Currently on sale @ BH for $259.99) Iv been watching a few videos to get an idea where to draw power from. Im seeing some horrible videos online on how to wire the dash cam. I'm not a fan of the ODBII port seeing that there is an extra power line right behind the microphone plate at the top of the car (on most newer cars). Here is a video of how this guy wired it I plan on doing the same thing ,but I did not like his wiring job. If you plan on wiring it to that cable, buy this for an easier cleaner install. They are POSI-TAP connectors Amazon.com: Posi-Tap Connectors Kit- Includes Taps for 22 through 10 Gauge Wires, Plus 2 Fuseholders!: Automotive That is for a kit . You dont need the kit, but I like to keep them around. I believe the red POSI-TAP is what you need. I will also be using the Flat Fuseholder to put a fuse on the dash cam. That line is already fused (not sure what amperage), but JUST IN CASE I will be putting a 1 amp fuse there.