With the adhesive backing still in place, test fit the trim on the marked centerline. Locate the best mounting location. 
Small Fender Models: See 
Figure 1. Harley-Davidson recommends the trim be set back 2.5 cm (1 in) the fender tip. 
Large Fender Models: See 
Figure 2. Harley-Davidson recommends the trim be set back 14 cm (5.5 in) the fender tip.