I got the a piller off and routed the wires under it.I hid the wires with the airbag. The ground wire is attached to somewhere near the hood handle.
I don't see the metal part where you have your ground. I'm trying to take the fuse box trim off but don't know how to remove the plastic fastener above the dead pedal... So I can find/use a ground point behind the trim
Edit: finally installed. I used a plier to stick it between 2 of the 4 holes and twist counter clockwise and it came out.