Based on what I've found by trial and error is that the ambient lights I think you are talking about are wired into the running/and or headlight circuit as they are only turned on when they are on. They do not turn on with door opening. I think the answer is to tee into the hot side of the...
Xerocide, any chance you have access to the wiring schematic showing the ceiling light and map lights specifically on a Civic LX hatchback? It would be good to see that schematic and compare to the others since that is the car I have and can run tests on.
Thanks for the reply and information. I did take mine apart and it has 3 wires. I will be testing these wires to see what they do. I'll let you know what I find. One of these wires should be always hot to provide constant power to the lights since they turn on even when the car is shut down...
Sashimi, I have been looking for a way to do the same thing on my 2023 Civic. I was assuming that the map light assembly with the door switch was probably a direct plug and play just because that makes sense. Can you tell me what happened when you tried to plug the new part into the wiring...