1965–1966 Ford Mustang Windshield Molding Installation
Direct Answer and Scope
Installing windshield molding on a 1965 or 1966 Ford Mustang requires the correct stainless trim pieces, matching clip set, and careful alignment around the windshield gasket. The two model years share the same basic installation method, but the molding itself differs because the 1965 cars use a flat, narrow stainless trim while many 1966 cars received a wider, slightly convex style. A material qualification is that windshield molding installation assumes the windshield and its surrounding rubber seal are already correctly installed; if the glass or gasket is not seated properly, the molding will not fit.
What You Need Before Starting
The job typically calls for the four main molding pieces: a driver-side top header molding, a passenger-side top header molding, and two side moldings. Fastening is handled by metal or nylon clips that press into mounting studs or holes along the windshield channel. On a 1965 Mustang the side moldings and header moldings are retained by a series of small clips that slip over the edge of the roof channel and door pillar. On a 1966 Mustang the design generally uses the same approach, but reproduction clips are commonly sold as a year-specific kit because the trim profile changed.
Step-by-Step Installation Overview
Begin by verifying that the windshield gasket is fully seated and that the body mounting points are clean. Place the clips into their locations along the upper and side windshield channels. The clips should be spaced evenly and aligned with the step in the stainless trim. Start with one header molding by hooking its top edge over the uppermost clips, then press downward and inward so the lower edge snaps over the remaining clip ledge. Repeat for the opposite header and then install the side moldings, working from the base of the windshield upward. The final piece often overlaps the header molding by a small amount at the upper corners.
Common Installation Problems
The most frequent issue is using clips intended for the other model year, which causes the molding to sit too high or refuse to snap into place. Another common problem is bending the stainless trim by applying force at the center instead of working gradually from one end. If the windshield gasket is new and still swollen from installation soap or lubricant, the molding may not fully seat until the gasket settles. In that case the trim can be left lightly pressed into place and rechecked after a day.
Checking Fitment and Final Notes
A correctly installed molding follows the windshield opening with a consistent reveal and no raised corners. The header and side pieces should meet cleanly at the top corners without overlapping excessively. Because original stainless trim can vary slightly after decades of polishing or repair, some hand-fitting may be needed. If a piece appears too long or too short at a corner, it is more often caused by clip misalignment than by the trim itself.