Rear liftgate switch

I've got a '03 Liberty and the switch that's built into the handle mechanism was badly corroded and not working. I took it all apart and cleaned up the corrosion as best I could and epoxied everything back together, but I'm afraid the repair will be a short lived one. Does anyone know the part number for the switch itself? Would I have to replace the whole handle assembly? I hate to go to the stealership for anything. Thanks!