Attn: thedutchguy

[thedutchguy]

What were to happen if I just disconected the wire to the pcm, tod and alarm?

[mbeach]

I would think that it would act as an "open."

Since your lighting circuit is not grounded through the 'TOD' side, your lights should still be fine (or at least unchanged)

Actually, that sounds like a good idea. Disconnect that 'TOD' circuit where it joins the rest of your lighting circuit.
This will help in fault isolation.