Complex sentence: Proper installation is critical, which means locating attachment points on the body/frame, assuring the strength by proper reinforcement, and following the seat belt installation instructions properly to reduce the risk of malfunction or failure.
Split into simpler sentences: Proper installation is critical, which means locating attachment points on the body/frame. Assure the strength by proper reinforcement, and follow the seat belt installation instructions to reduce the risk of malfunction or failure.