- May 27, 2016
- Reaction score
- Austin, TX
- 2016 Honda Civic Touring Sedan, 2011 Ford Fiesta SES
- Vehicle Showcase
I haven't taken a look under the panels myself yet, but there should be a rubber grommet through the firewall that already has cables running through it. Likely, the harness running through it will be sealed with electrical tape or something and you just have to cut into it, run your own cables, and then tap it back up. This is just general knowledge from past experience with cars, however, and I haven't taken a look at the exact routing for our civics yet, so YMMV.