Stan, I was happy to contribute to this thread in any small way. It was important for me to resolve the differences between the '01 and the '02 versions. Then it became crucial to fix the internal wiring error in the two '02 units. These units are now back together and on the layout, wired in tandem operating the two sets of road crossing signals. All is well.
Yesterday I hooked up a 3 aspect track block signal to the setup. So now the NC contacts activate green and the NO contacts activate red when triggered. Seems to be working as expected, except occasionally the green stays lit even while the red and yellow are lit. Balky relay I suspect? Time will tell. Its a vintage ROWI 4040 signal that is just seeing its first use since new.
Its been an interesting exercise and hopefully some good has come from it all that others can use. Dave if you decide one day to repost your wiring diagrams, they will probably be quite useful as well.
Rod
