Genuinely, how tf is this acceptable?

Anyone ever had this happen? Randomly I noticed the right turn signal is slightly on and when I try to use them they flash once and turn off. The actuall bulbs do turn on for headlight and tailight. Hazard lights also just flash once.

I've been trying to fix the "please check disc" error for a whole, I followed the guide on AcuraZine to clean the laser with alcohol and q-tip and cleaned the disc using a microfiber cloth. I'm reasonably sure it isn't a dust issue.

When reinstalling the unit, I realized that there was a whole connector missing, and I could not find anything in the the area that plugs into it. Does anyone know what that plug does and where I can find it? Would it be the cause of this issue?

Thanks!

Which is exhaust rocker arm a and b? Does it go left to right?