I was wondering was there a difference in BSP Key Systems Service Manuals that was printed in different years or was it small changes year to year that really does not make any difference? For an example I seen some from 1975 or 1978 or 1980. If so, do you guys recommend a certain year?
Eventually I would like to get the hard copy of the books so I can have them handy for my work bench.
Your best bet is to check out TCI Library as each BPS is specific make/model/revision.
If you are referencing a BPS from the first revision and you are working on a later revision of a device...there are changes that "may" drive you in circles.
