What would you need to do to turn a AA battery powered clock to a plug in clock?

You can purchase power adapters from Radio Shack or online suppliers that convert house current (115 V AC) to low-voltage direct current. If your clock uses two AA batteries, you need a 3 V DC adapter, since each battery produces 1.5 volts. If the clock uses only one AA battery, you need a 1.5 V DC power adapter or a universal adapter that can be set to 1.5 V. You then need to cut off the connector on the DC end so you have unterminated wires to attach to the clock. Have the store mark which wire is positive and which is negative, or determine the polarity with a voltmeter. You then will connect those two wire ends to the positive and negative battery contacts, matching the polarity. Likely the only way you will be able to make those connections is by soldering the stripped wire ends to the battery contacts. If any wiring could make improper contact with other wires or metal, insulate it by wrapping with a little electrical tape. Notch the battery-compartment door so the wires can comfortably exit the clock. Now you have supplied the necessary DC voltage to the clock. (Of course, do notput batteries back in the clock, now that it's powered from the AC-DC adapter.) You will no longer have to change batteries; but remember, every time you have a power outage, the clock will lose time or reset.