USB/Power Socket - Not Always On

Newer VIN constant 12v power options (dashcam)?

There is a connector that you could use to swap in a +5V supply of your own choosing just behind the touchscreen, I believe in the panel at the passenger footwell. There are more threads around here. The thread posted above talks about where to find constant +12V. I can't find the thread I was thinking of where it was discussed adding a better power supply, but I'm sure someone else might remember.

 

Not sure about the USB ports, but there was also a thread showing where to find the relay for the 12v socket in the fuse panel and how you could pop it out and install a jumper so it stays on all the time.

 

As mentioned in the other thread, the OBDII port offers constant +12v without splicing.

 

Here it is, with pictures.

 

You're welcome.

 

If you want to use the ODBII connector for permanent 12V power you can hack together a cable that does just that. Just need to pick the correct 2 wires which is pretty easy. My hack job looked like this:

The parts cost $18 and it took about 5 mins to cut the ends and solder the wires. Not a permanent modification to the Model S, just plugs into the ODBII. I use it for my dash cam.

 

Nice, but how many amps can the OBD II port deliver and is it fused anywhere? I would probably want to throw an in-line fuse into that assembly if it were me.

 

Yes, it is fused. See owner's manual for location and size. 5A rings a bell, but it's been a while since I looked.