I can't take credit for it. I found it on another forum when I had My chevy . So I said to myself... "self, I think that would look good with my signature" And here we are

 

did you run into any problems using the SVTLIGHTNINGS.COM site with your '03?? my '02's switch doesn't have the autolamp option, so i'm guessing yours doesn't either. any problems with reassembly after breaking the tabs?

 

I'm assuming your asking me? The link posted by RP should do the job for you. Mine is not a 2003, it's a 2000 with the auto setting, but yours should be fine. Personally I had no problems after breaking the tabs. I just used some crazy glue and held pressure on it for a few minutes.
Good luck with the mod