Most of the installation instructions can be found here:
http://www.handa-accessories.com/accord03.html

Take a look and see if you think it's something you want to tackle. I have
a friend who has an 03 Accord Coupe EX-V6 with all three of the accessories
you mentioned. I believe the fog lights require cutting the bumper with a
hacksaw. Also, the auto day/night compass mirror requires removing part of
the headliner and the plastic a-pilar.

"PO" <anon@here.com> wrote in message
news:5sv8qvo8fum60h9b6f4bcarmjv3bqdbst1@4ax.com...
> I took delivery of the above vehicle two months ago. Currently, I am
> contemplating adding fog lights, rear splash guards, and the auto
> day/night mirror to the car. A few questions exist in my mind:
>
> 1) Should I purchase these parts online and have them installed by a
> dealer? If so, what's a good place to buy online?
>
> 2) How much should I expect the dealers to charge for these parts
> including installation?
>
> 3) Are these parts self-installable? Will it void any warranties?
>
> Thanks.