TM 10-3930-669-20 7-46.  HORN BUTTON REPLACEMENT (CONT). (3) Connect  wire  connector  (3)  on  horn button terminal (4). (4) Install    horn    button    (1)    in    steering wheel hub (2). NOTE Follow-on Maintenance: • Connect batteries (Para 7-48). • Close cab door (TM 10-3930-669-10). • Remove wheel chocks (TM 10-3930-669-10). END OF TASK 7-104