Evo one install on 2020 accord pts 6pin power harness wire size

Question

What is the smallest guage wire you would recommend on the low current ignition system on my 2020 accord pts. The 6 pin wire harness that comes with the evo one has huge wires so im switching them out to smaller gauge since all the wires on the bcm im connecting to are very small wires. I assume id be fine with like 18 gauge or 20 guage since the factory wires are around 20 to 24 gauge.  I was also concerned about the ground going to the tiny wire off the bcm in the diagrams vs just grounding it to the metal under the dash where all the other grounds on car go to.

Answer 1

There is no problem connecting a large wire to a small one, the other way around is dangerous...

20awg would be enough, you can ground to chassis if you prefer.... the wire at the bcm goes to chassis anyway.