I have three hybridized mountain bikes. They all have indicators on the shifters. I just bought a road bike with "brifters." I am embarrassed to say that I find myself needing to shift down in a hurry and have to look down at the sprockets to figure out where I am currently at -- not good. Somewhere I saw a link to add-on shift indicators but can't find it again to save my life. Suggestions?

Thanks....Don in Austin