so i see a few of you guys using trek speedos and things like that.. i cant think of anyone specifically right now except tpd because of the fotm pics. a few questions.. will any of these units work, or just a certain few? will i not be able to ride at night because of no illumination, or are there some sold with a backlight? what do i do with my idiot lights, wire them to leds? and finally, installation is just like a bicycle i would assume?