DIY: Adding turn signal Lights to Si/EX side mirrors

9000RPM

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Removed the harness. Unplug the connector from the inside first then remove this big white plastic piece. Use a pick to lift on the tabs
Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors 1000008446

Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors 1000008447


Confirmed to have 2 open slots on the driver side door harness. Works out perfect, 1 will be positive for the turn signal, the other will be the ground side for the mirror defrost. The respective negative and positive will be tapped inside the door.

Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors 1000008449


Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors 1000008450
 
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9000RPM

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Lots of slots on the passenger side. Service manual is correct.
Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors 2023-12-1919.13.508326227977848220022


I'm gonna check if there is a turn signal wire nearby on the passenger. Don't wanna run all way back to the fuse panel.
 

9000RPM

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Found it. No need to run the right turn signal+ back to the fuse panel.

Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors WIRING_DIAGRAM.JPG



2 locations for the left turn signal. The green connector documented in the earlier post with the gray wire or C110, pin #13, light blue wire.
Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors Sheet21

Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors Sheet23


Right turn signal - C104, pin 23 is located on the front passenger side kick panel.
Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors Sheet22
 
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9000RPM

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Male portion of the 14 pin plug arrived. Fits the female connector from the OEM harness perfectly.
Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors 1000008478
 

9000RPM

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Crimped and inserted. Just posting these for myself mostly as a future reference and anyone else that might be interested in retaining OEM wiring.

Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors PXL_20231225_040440184


Honda Civic 10th gen DIY: Adding turn signal Lights to Si/EX side mirrors Sheet15.3
 


aznguy1992

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Male portion of the 14 pin plug arrived. Fits the female connector from the OEM harness perfectly.
1000008478.jpg
This works for the 2018 Civic SI as well? How do we exactly do this? Do we just buy the the female piece and the aftermarket part from like aliexpress and just put it together? Or do we need that seperate oem wire harness everyone is talking about? Congratulations on making it work!
 
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9000RPM

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This works for the 2018 Civic SI as well? How do we exactly do this? Do we just buy the the female piece and the aftermarket part from like aliexpress and just put it together? Or do we need that seperate oem wire harness everyone is talking about? Congratulations on making it work!
I quickly looked at the wiring diagram for the 2018 SI and it appears it already has that 14 pin connector. You might just need to order the harnesses. Double check though. I'm sure someone on here has taken the door panel off and shared a few photos during a speaker upgrade.
 

aznguy1992

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I quickly looked at the wiring diagram for the 2018 SI and it appears it already has that 14 pin connector. You might just need to order the harnesses. Double check though. I'm sure someone on here has taken the door panel off and shared a few photos during a speaker upgrade.
Which wire harness is it and does it work for all the 10th gen models? I've taken the door panel off a few times but I've never looked into the wires. Just would like to know what is needed in order to plug and play the led/sequential drl mirrors.
 


 


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