Trying to determine some game balance. We have a droid that is pursuing cybernetics. As a PC I remember reading that they can have 6 cybernetics. What happens if they want things like a code breaker attached to them. Does that count as a hard point (and against the six)? or if it not is the encumbrance still a factor?

Encumbrance is still a factor. Gear that is built into the droid does not count as cybernetics.

In the core rulebook, cybernetics are listed in their own section.

The rules for cybernetics exist outside the scope of the beginner game, so your best bet would be to post in one of the primary forums. Edge of the Empire gets the most traffic.