I just bought a pillar and oil temp gauge from an SRT 10 for my '05 Hemi.. Its just the gauge, what will I be needing to get this to work correctly in my truck? Thanks...

what brand and model gauge is it? you could start here if it is an autometer gauge http://autometer.com/cat_accessorieslist.aspx?pid=8 and then you will need a wireing harness for it as well

That gauge is made by autometer in their OEM dept so they don't sell a harness or sender that is made specifically for it. Basically you have to call their tech support and get a sending unit for a full sweep oil temp gauge and then figure out how to connect wires to it as they don't sell the harness for the sender your going to need. Once you see the sensor you'll see why I said figure out how to connect it. It uses the really small pin style connectors that are right next to each other.

If you can figure out that part the gauge is pretty much self explanatory as it is power, lighting, ground, and one wire to the sending unit.