As Simon said, I did about 20 or 30 (lost count) runs of lights last year. Check my gallery for close up shots.
For all you do-it-yourself'ers out there, this is how to get them made.
1. Buy the lights. They are Britax globes with part number SL67/x where x is the colour (B-Blue, G=Green, R=Red, A=Amber). I got mine from Bursons for about $5 or $6 each from memory. You can buy them elsewhere too. Checkout
britax for details on distributors.
2. Send them to the engraver. The engraver I used is:-
Abell Business Image
Factory 2, 31 Cleeland Rd
South Oakleigh
Melbourne
Ph. 9545 6136
There are two guys named Ken there and either will know what you're talking about if you say they are Cobra dash lights. Give them a call first. When you send them, make sure you say what symbol goes on which colour light (what is obvious to you is not obvious to them). They still have all the artwork that I did so no problem there.
The cost was/is $16.50 for laser engraver machine set up (one off cost) plus $4 odd for each light. Plus postage back to you I guess.
Word of warning....sometimes they can't tell if the machine is centred until they engrave a light. So it might pay to send them one extra light to 'play' with to make sure all the others will be spot on. I had to do a few re-runs because of this so it may save you time.
Hope this helps.
Adrian.