I did this mod on my s14 a while back. Of course this will only work for non-sunroof s14's. I retro-fitted 94-01 acura integra map light. I will post a picture this weekend as my car is park at my house in Pennsylvania. Below is the link I followed from one of the Honda forums.
http://civic-eg.com/viewtopic.php?p=...3e3ba3757b00e9