I felt like making a tutorial for you guys to help alleviate the power issues some people are having with getting 2.5'' hard drives to work. The AVIC unit only puts out 500mA or less of current, which isn't enough to spin up the majority of 2.5'' drives. You need to have an additional power source. You'll want to use one of these cables do to that:

Ok, here we go.. the fun part.
Tools needed:
- Screwdrivers, sockets, or whatever else you need to take apart your car interior
- Pliers
- Drill
- Drill bit to drill pilot holes for screws (I used 1/16'' bit)
- Hole saw (I used 1'' diameter so I can fit a lot of cables through it to run behind the dash)
Parts needed:
- Zip ties
- Cigarette/USB multi-use car charger (http://www.amazon.com/Multi-Use-Car-Charger-Dual-Ports/dp/B000PB8CQI/ref=sr_1_3?ie=UTF8&s=wireless&qid=1241655923&sr=8-3)
- Cigarette lighter socket (http://www.amazon.com/Parts-Express-CIGARETTE-LIGHTER-SOCKET/dp/B0006TIRZA/ref=sr_1_1?ie=UTF8&s=automotive&qid=1241655997&sr=8-1)
- Quick spice vampire clips (http://www.amazon.com/Pico-1558PT-Electrical-Wiring-Package/dp/B00030CQGI/ref=sr_1_4?ie=UTF8&s=automotive&qid=1241656037&sr=1-4)
You may substitute any of those things for a product you may like better; that's just what I chose. I liked the multi-use charger because of it's nice mounting legs and dual USB ports. You can power a 2.5'' external hard drive for the AVIC, and have your phone charge at the same time. You can always run USB extension cables through the center console and to your cup holders, rear seats, or wherever you want to bring power to.
1st: Take the glove box out of your car.
2nd: Mount the charger unit in the glove box. Be positive of where you're going to mount it so it doesn't interfere with anything when you actually put it in the car and open/close the glove box. Note that it can't be mounted too high because when you have things plugged in, you don't want them crunching in there when you close it. It also can't be mounted too low because of the hinges. You'll want to drill two small pilot holes where you want to mount it, then use the small screws it came with for mounting. Here's where I chose to mount mine.

3rd: Drill your hole to route cables through now that you know where your charger unit is mounted. I didn't find it necessary to use the drill with my hole saw because it's just soft plastic. Turning it slowly by hand will ensure a good cut through without screwing anything up cosmetically. Again, make sure the hole is up high enough from the bottom of the glove box so you don't slam cables in the hinge. I used a large 1'' hole so I can fit the cigarette lighter 12v adapters through it, as well as USB cables.


4th: Next, take it out to your car so we can wire it up. I chose just to splice into the existing cigarette lighter to make it super easy. That way it switches on when you turn on the car, and switches off when you turn off the car. Use the quick splice connectors to connect the factory cigarette lighter wires to your cigarette socket you bought. You'll probably have to use pliers close the quick splice things all the way so it makes contact thoroughly. It should look similar to this:

5th Drop the 12v cable (the one for the usb/12v charger unit) from the glove box down behind and into the center console. I found it easier to sit in the passenger seat and put my left hand up inside the center console portion while feeding the 12v cable from the glove box down in with my right hand. You should now be able to connect them up. Bundle up your slack wire with a zip tie and stick it behind the glove box. You can use more zip ties in other places so you don't get anything rattling around.
6th: Before putting everything back together, verify power is reaching the unit by turning the ignition key to accessory. Red light = good.

7th: Reassemble your interior and you're done!
Finished product:



