The correct procedure for installing the new power antenna mast is:

1. The antenna motor must first be removed and disassembled to be sure that no broken pieces of the old "cable" remain in the motor housing. Then reinstall the motor housing unit into the car but do NOT install the exterior trim pieces and lock nut.
2. Two people required. Person A gets in the car and turns ignition to ACC and then turns on the radio. (Person B listens to the antenna motor to make sure it is spinning to "raise" the antenna.)
3. Person B now feeds the end of toothed nylon "cable" down into the motor housing opening. Care must be taken to get the end all the way down as far as it will go (there is a little ledge a few inches down inside the opening, you have to get PAST that little ledge by a inch or so).
4. Once the end of the nylon "cable" is positioned correctly, person A turns OFF the radio and the antenna motor will start pulling the rest of the power antenna "cable" (and, eventually, the collapsed mast sections) down into the motor housing. Person B carefully guides the cable and mast down into the housing opening. (Watch those fingers!)
5. Replace the trim pieces and lock nut and VOILA. All finished.