dexgen

Quick question on my wife's 09 Journey. I am needing to replace the trunk lid/ lift gate and there are options of salvaged ones with the key less entry and without. What is the difference and will either trunk fit/ wiring connect the same. I am assuming that by key less entry they mean a automatic opener on the back, cause I thought all models came with the key less lock/unlock. Your help is appreciated as I do not want to get the wrong one and have an issue with wiring not matching up.