The Dapol signal shown in the picture is operated by the Cobalt iP Point motor - the point is just inside the tunnel portal. When powered independently the signal can be operated by touching the two yellow wires together and the signal changes every time. When wired through the Cobalt it operates every other time.
Is this due to the point motors slow operation - I recall the signals yellow wires are connected to terminals 7 & 8 on the Cobalt.
I just found the answer

