When I did the led mirrors on my 04 gtp I took a set of the strip leds 3" long had 3 leds in each.
I simply cut away some of the black plastic backing with a razor and without modifying the mirror Itself at all they shined through bright enough for me to be to satisfied. Here's a picture of them before I moved the leds to behind the mirror and from horIzontal to vertIcal. I can't seem to find a picture of the final.
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