Where to tap into for power.

I'm installing a USB charger in my 2011 and wondering if someone would be able to show or tell me which wire to splice in to under the dash. Powered all the time and/or with key on. Or if someone has any other suggestions. I don't want to have to pull the interior all apart.

Thanks in advance.

 

Use a circuit tester and find a circuit that's always hot in the fuse box on the lower/left of the steering wheel. You can tap into one of them with one of these:

 

This is what I did, with 12 gauge wire. Matter of fact, since I was at it I ran two wires. One for a dual USB port and one for future use. Ran the wire into the cab through the main wiring entry point through at the firewall above the steering column. I also used these push connectors in the cab that allows me to add more accessories to wiring. http://www.amazon.com/Wago-Wire-Con..._sim_60_4?ie=UTF8&refRID=1RXAPJ6H96PXB1CJ035Y