Hello again, so to review let me clarify.
You checked 2 orange wires to the black wire with a headlight and the light turned on bright?
On the communication wire you actually powered the wire up and then checked it with the headlight and it turned on bright correct?
The communication wire is very low voltage, that is why I asked if you powered it up, it should not light a headlight unless you powered it up.
How are you connecting to the wires to check them, why I ask is if a test light is pushed in the front of the terminals it will damage and spread them open so as to not make connection on the much small terminals in the connectors.
Lastly you can look at the terminals from the front, or the portion that plugs into the mating terminal and compare the small openings of the female terminals to other terminals that are the same in the connectors, look very closely at the openings they cannot be spread open when compared to the other terminals.
I usually use a small needle so as to not spread terminals, but I would start at the door module terminals.
If any of my clarification questions are not correct, let me know.