Highly recommend Bluetooth ODBII Scanner
I know this ODB scanner has been talked about in these forums before, but I would still like to add my recomendation if you're in the market for an ODB scanner.
Its the Car-Pal bluetooth scanner available here.
With any other scanner I'd have had to pull wires under the carpet of my truck to install the ODB scanner. It would have taken me probably an hour by the time I removed all of the trim, strung the wire, and reinstalled the trim.
This scanner took me about 10 minutes. I plugged it into the ODB port on my truck. I installed the software CD into my truckPC and 5 minutes later I was done. It was fast, painless and so far flawless.
The car-pal gets its power from the ODB port on the truck.
Moreover, if I want to scan another vehicle I can unplug the car-pal, plug it into the new vehicle and use my laptop to retrieve the scan codes. So the investment in the bluetooth scanner means the one scanner will work for every vehicle I own and can be left permanently in my truck when I'm not using it on another vehicle.