- Decrease trim incorporates a 7mm screw and T20 screw. Eliminate and pull down tough. Not required to take out reduced trim for 2018's. 13razorbackfan stated: Also, I just did it a moment ago, consider clicking the gear icon or maybe the Mustang icon then check out journey then it https://reidnicum.ampedpages.com/the-fact-about-digital-dash-mustang-that-no-one-is-suggesting-59098885