Simpson 5-Point & 6-Point Racing Harness Mounting Angle Diagram - Upright Seat

This document is a Simpson racing harness mounting diagram illustrating the correct installation geometry for an upright seating position with a 5-point or 6-point harness. It depicts a driver in a racing suit and helmet (both bearing Simpson logos) seated upright at a steering wheel, with harness belts drawn in place. Key installation specifications shown: the shoulder harness should mount 0 to 10 degrees below the shoulder line (a 10° angle is indicated). The lap/anti-submarine belt mounting angle relative to the ground is shown as acceptable between 45° and 60° (labeled 'ACCEPTABLE MOUNTING ANGLE'). For the anti-submarine (crotch) strap mounts on the 6-point configuration, both mounts should be located 20° behind the chest line and spaced 8 to 12 inches apart, measured from the buckle. The diagram uses arrows and shaded angle wedges to communicate the acceptable ranges. A reader learns the proper shoulder belt drop angle, the acceptable floor mounting angle range for lower belts, and the placement geometry for dual anti-submarine strap anchors. The document is a generic Simpson safety equipment installation reference rather than a vehicle-specific service document; it contains no year, make, or model information.