I'm considering putting a Ghia interior light into my ED GLi but was wondering if it is a straight swap or would I need to alter the wiring or anything?

in an eb and I assume ed is the same, it is actually very very easy!

The new light will have two green wires and one black wire. The old light has one black and one green.

You simply join the green wires together, and the black wires together then that is the wiring side done.

Next you just need to carefully trim the roof lining so that the light sits properly. Thats all there is to it! It will screw up using the same mounting points from the old one. This is the easiest mod I have done to my car!

Excellent.....I'll go and get a Ghia interior light tomorrow and fit it in.
Cheer's for the info.