I just installed a Raptor shift light and it works very well.No CEL either.The install went well,as per the instructions on their web site although it took me a lot longer because I was afraid I'd screw somthing up.
If anyone is looking to buy one of these I can give the Raptor a complete thumbs up.

 

...Ill buy one, when a certain store that I love so much gets them...BOB!!!!