I recently added a dome light on the passenger side. It is really quite simple.
The hardest thing being the removal of the ceiling panel. Here are the steps:

1.) Buy a new dome light
2.) Remove ceiling panel
3.) Make a template of the driver's side opening
4.) Carefully measure so that you make a passenger side opening as an exact
mirror image of the driver's
5.) I added a cut metal plate like on the driver's side for strength (cut from
flat stock) and
     pop riveted to the panel
6.) Extend the wires from the driver's dome light to the passenger's side.
7.) Put everything back together.

I'm thinking about adding a third dome light that would be at the rear of the
ceiling panel between the front seats as well.

It makes a real difference and is worth the time.

Randy Huyck wrote:

> A year or so ago I found a list of modifications someone had made to his
> Vanagon, such as driver's side assist handle, passenger side dome light,
> etc. on some web page.  This wasn't a post to a list, rather it was a page
> of its own on a Vanagon-related site.  Wasn't able to bookmark it on my old
> computer and have lost my hand-written catalog of "useful" sites.  I haven't
> been able to find this info at any of the VW/Vanagon related sites I've
> searched in the last few months.  Anyone have any idea where this post was?
>
> If I recall correctly, the author thoroughly detailed a number of simple
> convenience modifications and storage ideas.  If you have any idea where
> this info can be found, please let me know.  Yes, I've already checked the
> archives...
>
> Randy, Carla & Anna Huyck
> '75 Westy
> '79 Mercedes 300D
> '85 Vanagon
> '90 Fox