Model 124 Chassis (1986 - 1995) MERCEDES 190E of 1990, my antenna is broked, the motor is working good, i buy another antenna and i like you to help my how install in the same electrical motor, i mean the interior of antenna, please help me out with this realy realy , the new antenna got plastic ond the end of it to put in the eletric antenna motor, there is my problem how i do it? please help is urgente!

THANK YOU ALL! REALY! THANKS

Fairly simple , read this thread and you should manage ok ; http://forums.mercedesclub.org.uk/showthread.php?t=16402&highlight=replacement+aerial+mast .
Cheers,Geo.