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Door Assist Interior Lighting HELP

Jocoo26

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I have a 2021 Rebel. I installed RGB LED light bars in the footwells. My goal is to have the footwells illuminate when the door is opened. I normally keep the interior light switch in the off position so none of the factory interior lights illuminate when the doors are opened. If I connect the LEDs to an interior light source, and turn the switch to the auto position, they come on with the factory lights, however the factory interior lights are so bright that they drown out the color of the footwells. If I turn the interior light switch to the off position, neither the interior lights nor footwells get power. SO, if you haven’t guessed it already, I’m looking for a way to have my footwells illuminate when the door is opened without all the other interior lights illuminating (aside from pulling all the interior bulbs). Any help would be appreciated.
 

cskindt

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I have a 2021 Rebel. I installed RGB LED light bars in the footwells. My goal is to have the footwells illuminate when the door is opened. I normally keep the interior light switch in the off position so none of the factory interior lights illuminate when the doors are opened. If I connect the LEDs to an interior light source, and turn the switch to the auto position, they come on with the factory lights, however the factory interior lights are so bright that they drown out the color of the footwells. If I turn the interior light switch to the off position, neither the interior lights nor footwells get power. SO, if you haven’t guessed it already, I’m looking for a way to have my footwells illuminate when the door is opened without all the other interior lights illuminating (aside from pulling all the interior bulbs). Any help would be appreciated.
You're going to have to tap into the interior light power circuit upstream of the switch. Use a relay to control your new lights.
Or, if you don't use your interior lights, remove the bulbs or put red leds or a tolerable color.
 

Jocoo26

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You're going to have to tap into the interior light power circuit upstream of the switch. Use a relay to control your new lights.
Or, if you don't use your interior lights, remove the bulbs or put red leds or a tolerable color.
I’ve considered that, however if I tap in before the switch, then the lights are always “hot.” The same as if I tapped into the interior light fuse. I’m thinking I need to tap somewhere into the door sensor, however I’m not sure where that is located.
 

Jocoo26

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Is there anyone that could provide a wiring diagram for my truck?
 

cskindt

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I’ve considered that, however if I tap in before the switch, then the lights are always “hot.” The same as if I tapped into the interior light fuse. I’m thinking I need to tap somewhere into the door sensor, however I’m not sure where that is located.
I don't have any diagrams. Others might.
Yes, you'd have to find the power circuit controlled by the door switch.
You can pull the overhead console down and check the circuits for voltage that go to the light control switches. Trace it back from there.
 

Jocoo26

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Hey, I’m STILL looking for a solution to this problem. Has anyone found or know where the door switch power circuit is located?
 

kapinallinen2

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Hey, I’m STILL looking for a solution to this problem. Has anyone found or know where the door switch power circuit is located?
There is no specific "door switch power circuit"
The door switch signals the door control module that "talks" to the body control module over the Can Bus. Then the BCM signals the related modules as necessary.
 

Jocoo26

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Ok…so where exactly would I need to connect to accomplish what I’m trying to do? Is what I’m trying to do even possible?
 

skyhawk42

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Depends on how much you want to spend, but you could buy an interface module that aftermarket alarms use. It would tie into the canbus wiring and provide a negative output when the doors are opened regardless of the dome light being on or off.
 

Jocoo26

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I’m afraid that’s a little out of the scope of my knowledge base. Any parts needed or a quick explanation of how to wire that up would be appreciated. Where is this canbus located?

This all seems so excessive for such a “simple idea.”
 

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