Derek,
The seat belt warning system was started then two - at least in the US.
The inertia reel seat belts probably started then too, since they have the
seat belt switch in the female end. Triumphs Only has some of the Triumph
dealership service bulletins posted on their web site, and I found this one:
April, 1972
Federal Safety Standard number S208 requires that all passenger cars
manufactured on or after January 1, 1972 shall be equipped with a seat belt
warning system provided for the front seats.
As in the case of the ignition audible warning system, it is necessary to
ensure that all vehicles so equipped are not delivered to retail customers
unless the seat belt warning system is fully functional.
This item should be checked at Pre-Delivery, 1,000 Mile Inspection, and all
subsequent service intervals.
Jeff
'74 TR6
----- Original Message -----
Subject: [6pack] Plastic Vent
> Many thanks to all who responded to my request for details on when the
> plastic air inlet vent was introduced. Conclusion is that it was probably
> when the commission number suffix changed from an "L" to a "U" and this
> occurred at circa CC78521 U. This also ties in approximately with the
> first
> of the TR6 manufactured for 1972, not the 72 model which started at
> CC75001
> L but the start of the 72 year. As note by Kai "Lower production costs
> is
> my guess. Injection molding a bunch of plastic vents is a lot cheaper
> than
> producing stamped metal pieces and also don't forget they could delete the
> associated linkage assembly. So overall, I think it was a cost savings
> move"
>
> I wonder if anything else changed at the same time?
>
>
>
> Cheers from the other side of the pond
>
> Derek
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