Normally it’s on the underside of the glass. It’s essentially impossible to remount in the exact same position. I noticed two issues when I had to have my wind

Normally it’s on the underside of the glass. It’s essentially impossible to remount in the exact same position. I noticed two issues when I had to have my wind screen replaced: * the curvature is slightly different on the new glass. Unfortunately, for me this put the heads up display at a slightly different position and I seat too high for it. * glass has variation in thickness. This can cause visual distortion. Further, when you’re replacing a windscreen you cannot guarantee the existing windscreen has the camera in the correct position. After all, if you’re replacing the windscreen, it’s probably damaged.