The OSPi 1.4 (including B+ version) EagleCAD schematic and board design files are now checked into Github:
https://github.com/rayshobby/opensprinkler/tree/master/OpenSprinkler%20Pi/hardware
In terms of schematic, it’s the same as OSPi 1.3 (other than changing the relay type). If you are still having trouble with your board, try to use the self_test demo (in the /home/ospi/demo folder) which will turn on each station a few seconds one after another.