It was not required by law in the earlier models and it is not something they wanted people messing with so no I dont think there is a way.
New models will have a weight sensing switch in the seat that will cut it off under a certain size.
In vehicles where there was an option for the child to sit in the rear a shut off was not required.
depend on year and make of your Vehicle. if late model Ford/Lincoln, it means your driver side "seat belt pretensionor". (There is small bomb in seat belt retractor related with airbag) if early model Ford/Lincoln (and maybe some GM), it means passenger side airbag "System" Don't take it lightly as "Oh, it's just seat belt pretensionor. Airbag still fine". your airbag may not deploy to avoid injured by airbag, if something malfunctioned with pretensionor.
on early models its next to the fuel tank.on later models its inseide the fuel tank, you can access it by lifting the rear passenger seat and its under an oval plate. it could also be inside the boot.
beetles
Sphere
Note that nothing from the New Beetle is compatible with the early Beetle. There are some minor differences in the parts for the early Beetles that would take a book to write about. There already is a great book out about the air cooled Beetles called "How To Keep Your Volkswagen Alive" by John Muir. It give great insight into this lengthy subject, check it out!
The early models had a vacuum hose only. Late models have both.
Sphere
Trek 5200
old and dusty and they were small
Really not recommended for early models. Don't know about later models.
In the Early year of 1800, Asians ruld the Gobi Desert, feeding of beetles and mammals,
Early models of flashlights.