I have an AP car, which requires me to have a proper seat and five point harness for time trials. I have both these, but as a novice time trialer I will have an instructor in the car, and the passenger side still has the factory items. What is the rule for passenger side? Not that I want the instructor to be any less safe than I am, but I can't find a specific reference to it anywhere.
For Time Trial and DE, five or six-point harnesses are required for all drivers and passengers running in any Prepared class or higher and are strongly recommended for all entrants.