FFR 65 Cobra turn signal wiring MK#3 with donar 96 mustang wiring

[OkliMark]

I'm chasing some wiring gremlins from the previous builder specifically the indicator lights and the VW turn signal switch arm I have

Please explain where each wire goes on the attached diagram. do I run a ground to the right and left dash indicator lights and then tie them into the main ground circuit?

Thank you.197728