I have an 07 x304 John Deere and want to connect a 12 volt attachment. Where can I connect for the 12 volt power?

Do you have a 12V power port located in the lower part of the pedistal?

No I don't jave the power port, however under the hood on the right hand side there looks like a 2 wire connector that may be what you pplug into.

That empty plug would plug into the power port if you had one. Go to your JD Dealer and get one Not expensive at all. It will mount in the lower part of the pedestal. Shoul have a blank plug there to remove and replace with the power port. Only other option would be to rig one up with clamps to connect onto the battery