Simply remove the screws and washers (these are often lost!) from the lights.

Place the top bracket (A) in place, it'll fit perfectly. Use the original screw and align and tighten.

The bottom bracket (B) is placed as shown, be sure to align one edge to the light itself and then tighten with the original screw.

In all cases, do not over-torque these screws, they aren't structural parts and just need to hold the RennGuard's in place.

Each RennGuard is designed specifically to fit on the right or left side, so when fitting take care to observe which side they fit.