Do what that guy said. Don't try to unplug the antenna wire, just pull the plastic bits out while the antenna is in the fender well. Then, put it back togethor, put back in truck, and turn on the antenna. Let it run till the motor stops. Shut it off and shove the new mast in while it's retracting. Tighten the top nut with the proper tool after the mast gets sucked in all the way. Sometimes just some needle nose or snap ring pliers will work if you don't buy the 4 prong tool for the nut. Good luck!