I just got a 1987 Fleetwood Brougham velor interior tan with tan exterior and like new Michelins. CB Radio and evrything in the car works with the exception of the radio antenna which is in the up position and the battery I had to replace due to dead cells. The power release button in the glove box only works if the ignition is turned to the on position. Driver foor lock control button unlocks the doors sometimes. Good ride and smooth on the highway. Cruises ay highway speeds well and it is actually going faster than it feels so have to back it down. This is a one owner car with 64,447 origonal miles on it. The next scheduled oil change is 68,450 miles. How hard would it be to get keyless entry added?