- Decreased trim has a 7mm screw and T20 screw. Take away and pull down hard. Not necessary to take out reduce trim for 2018's. -Remove the trim to the right from the steering column. Just pull out. This has the very little slits in it to the HVAC inside https://charliesdnwf.activablog.com/31253509/the-smart-trick-of-2018-mustang-gt-digital-dash-that-no-one-is-discussing