When Sean & Emma are changing the time on Danush's watch and clock in his car, Emma sets his watch to 1:40 while Sean sets the clock to 1:44. Later when Danush checks his watch and clock, they both show the same time at 4:58.
When Sean is in Danush's car cutting the antenna wire from the radio's wire harness, it's simply laying out under the dash. Without removing the radio itself, or removing most of the dash that surrounds it, the wiring harness would not be accessible this way and it wouldn't have that much slack to come out of the bottom of the dash.