On this page you will find downloadable drawings in PDF format of the engine plates, instrument panel, crossover shaft and other interesting parts as well as general specs for the Tribsa. Feel free to download & use.
Bear in mind that mounting holes on these old BSA frames may vary slightly so it's best to use the drawings to make a paper or cardboard cut out first just to be sure.
I have also included my own wiring diagrams which I have broken down into easy-to-understand sections. Please note that I'm not an electrical specialist, but these worked for me and may be useful as a guide.