Robin - if you look up, there's a link from Recaro stating your seats are approved for use with a 4-point harness......
....Is the Recaro seat as TC's and mine one of these? : -
Keiper Recaro:
Orthopäd, Designer Touring, Idealsitz SR, Idealsitz L/LX/LS 84, Idealsitz CS84, CSE, T-Line, Designer Sport, C-Classic, TX, N, LS, CT, Variomed, A 8, Modular, Ergomed, IS 2000 Style, D&W-Sitze