Unofficial Honda FIT Forums - 3rd gen LED pillar lights wiring

https://cimg6.ibsrv.net/gimg/www.fit...b6ae8a7f7b.jpg
Here is my basic wiring diagram for those 3rd gen aftermarket pillar lights. These i ordered off of Aliexpress and have 3 wires, one for ground, running light and brake light. For simplicity i tapped one wire from the 3rd brake light and ran it through the hatchpanel where the OEM wiring harness goes through. It was a pain to fish it through but what i did was with the trunk open, i had this one wire inside of some plastic armored tubing
https://cimg9.ibsrv.net/gimg/www.fit...9c5b7ff71a.jpg
From the OEM 3rd brake light harness i fed the wire/tubing out of the BOTTOM left grommet of the door when the door is open. In this pic here, above my hand you have better access for the fish, however i fed regular 14/2 house wire and used it as a fish through that corner and out that same bottom left grommet. I used electrical tape to hold them together I then pulled out the 14/2 to bring this tubing to where i have that spade connector. Check out my post under r/hondafit on subreddit.
https://cimg0.ibsrv.net/gimg/www.fit...6a12be489c.jpg
I used quick splines rather than T taps for more cleaner wiring. I only used 4 of these, one to tap into the brake light wire up top at the harness, one to tap right side pillar brake light wire into left brake light pillar wire (since i connected left pillar and 3rd brake light directly with a spade connector) and 2 to connect a branch wire for the running lights to the licenses plate bulb grey wire (i used bullet connectors to connect the running light wires directly then tapped off of that)
https://cimg3.ibsrv.net/gimg/www.fit...4cc660de2d.jpg
For the grounds, i grounded them individually. Right side grounded at a wiper motor bolt, and left side there was almost like a rubber weighted block bolted within a bracket to the door? Idk what it was but i used a bolt from there to ground to.