94-98ClusterPinouts shows the differences between instrument clusters from 1994-1998. This information can be used to do instrument cluster swaps between years. Rev 2.0 includes wire colors and pin swap maps.
Analysis of a 1974 Smiths Seat Belt Module (pdf) In 1974, the US federal government mandated that cars' starters be disabled if the driver or a passenger in the car are not belted in. The unpopular mandate was dropped by 1975, so only 1974 model tear cars came with such equipment. Smiths designed a seat belt module that was used in the 1974 Series-3 E-type V12 "Jaguars as well as Triumphs, and some other British cars.
73 Chevy C10 Fleetside Fuel Filler Neck Mod. (pdf) We fabricated a new fuel filler neck for a 1973 Chevy C10 fleetside pickup in order to fix the problem where modern gas pump nozzles make it impossible to quickly fill the tank without spilling a lot of fuel in the process.