My father just purchased a 1975 TR6. His first TR in 30 years!
I compiled these links for him, but thought people who read my blog might appreciate them.
Useful links
6-Pack Forum - http://www.6-pack.org/j15/index.php/forum
Best Tech articles on the web - http://www.buckeyetriumphs.org/technical/technical.htm
Wiring diagrams - http://www.advanceautowire.com/tr2506.pdf
Dashboard wiring connections - http://www.6-pack.org/j15/media/kunena/attachments/6613/74-75FaciaR1_2014-03-30.pdf
www.mossmotors.com
www.the-roadster-factory.com
My Blog- http://www.coventrysfinest.blogspot.com/
Websites from two of my friends -
http://tr6.danielsonfamily.org/
http://www.74tr6.com/
The Bentley manual online version http://www.bmcno.org/manuals/TR6%20Repair%20Operation%20Manual.pdf (Download and save)