About this 3D model

This is a replacement headlight switch I modelled for a friend's 2002 F-150, and also fit another friend's F-350. Both have said it works well, however I'm sure some refinements could be made. According to the parts database cross reference, it should fit the vehicles listed below: FORD EXPEDITION (1997 - 2002) FORD F-150 (1997 - 2003) FORD F-150 HERITAGE 2004 FORD F-250 2004 FORD F-250 SUPER DUTY (2001 - 2004) FORD F-350 2004 FORD F-350 SUPER DUTY (2001 - 2004) FORD F-450 SUPER DUTY 2004 FORD F-550 SUPER DUTY 2004 FORD F53 (2006 - 2009) LINCOLN BLACKWOOD 2002