Honda Civic Owners Manual: Modifications
Do not modify your vehicle in a manner that may affect its handling, stability, or reliability, or install non-genuine Honda parts or accessories that may have a similar effect.
Even minor modifications to vehicle systems can affect overall vehicle performance.
Always make sure all equipment is properly installed and maintained, and do not make any modification to your vehicle or its systems that might cause your vehicle to no longer meet federal, state, province, territory, and local regulations.
Do not modify or attempt to repair any of the electrical components.
Accessories
When installing accessories, check the following:
Do not install accessories on the windshield. They can obstruct
your view and
delay your reaction to driving conditions.
Do not ...
See also:
Honda Civic Owners Manual. Adding Security with a Tether
A tether anchorage point is provided behind
each rear seating position. If you have a child
restraint system that comes with a tether but
can be installed with a seat belt, the tether
may be used for additional security.
1. Locate the appropriate tether anchorage
point and lift the cover.
...
