I refuse to install any visable guages in my sc300, only a boost guage and its hidden hidden.
I need a shift light so I am looking into a "plug in" shift light I could use at the track.
How accurate or repeatable are these universal shift lights sold on Ebay.
I don't care all that much about accuracy but repeatability is more inportant. I can always compensate for accuracy.

Item number: 8060430498

I know there are better options. So no lectures. Just first hand experience with the above or something like it.

 

check this one out, is it the same thing?
4634942312
ebay item number
edit:
i think imma buy one (because im bored) and ill tell you how it goes, if it goes well. ill get 2 one for 3k rpm (to save gas) and 1 for 6 lol