I bought a pack of 5mm 12 volt white LEDs from an Ebay seller in China
Removed the panel from under the steering column and drilled holes for the LEDs
A bit of hot glue and some crimp connectors finished this part
I then removed the door panel and tapped into the feed for the door/puddle light.
This means the lights will only come on when the driver's door is open, which is what I wanted