will take some photos of mine later.
I just tap a led to the positive wire powering the solenoid that engages vtec...
I think someone try to control it manual but it got a cell light...
What do you mean by R18A2 datasheet? The engine specifications?
they are pretty much the same R18A1 and R18A2...
Other interesting links for you to look:
Technical Overview of Honda's new R18 i-VTEC Implementation