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Rear Door Courtesy Lights wiring diagram needed?

Tiny
CARMAKER
  • MEMBER
  • 2018 HONDA ACCORD HYBRID
  • 2WD
  • AUTOMATIC
  • 30,000 MILES
Hi, I'm trying to DIY a courtesy light into the rear doors of my Honda Accord 2018 hybrid touring. I need the electrical diagram of the rear door lock to wire tap into. What I want is for the light to turn on when the door opens and turns off when it closes.
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Sunday, March 3rd, 2024 AT 6:32 PM

8 Replies

Tiny
KEN L
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  • 47,536 POSTS
Don't the courtesy lights do that already? "The light to turn on when the door open and turns off when it closes" Maybe I don't understand but here are the door lock wiring diagrams as requested. Check out the images (below). Let us know how it goes.
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Monday, March 4th, 2024 AT 10:29 AM
Tiny
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Thank you for the reply, Ken, I will go over the provided diagrams. To clarify my situation, my car model only has the courtesy light in the driver and passenger door. The rear doors are empty, which is why I'm cutting a hole for it.
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Monday, March 4th, 2024 AT 11:17 AM
Tiny
KEN L
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I see, thank you for the clarification. It looks like the brown wire on the door lock might work as it controls the ground for the latch. You will need to supply 12-volt power to the other side of the bulb. Let me know how it goes :)
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Monday, March 4th, 2024 AT 11:46 AM
Tiny
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Okay, I went over it, so what I'm thinking is to tap into the door handle led for the positive wire. But for the negative wire I'm not sure, but I'm guessing the brown wire according to the diagrams? However, there are two brown wires, any insight would be greatly appreciated. I attached the picture.
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Monday, March 4th, 2024 AT 11:46 AM
Tiny
KEN L
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I don't think the purple wire will work for power as it goes to the BCM which I would not tap into. The ground should work though.
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Monday, March 4th, 2024 AT 11:56 AM
Tiny
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No, that was not what I meant. I already have a 12v constant wire for the power. I was referring to the negative wire which should be connected to the brown wire, but which brown wire is the question, there are two on the diagram. Or maybe both would work lol, I will test both out when I get home tonight.
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Monday, March 4th, 2024 AT 12:00 PM
Tiny
KEN L
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Lol yep, it should be on pin ten.
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Monday, March 4th, 2024 AT 12:14 PM
Tiny
KEN L
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Anything?
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Saturday, May 11th, 2024 AT 11:54 AM

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