Grounding questions...

[Shy_Koi]

Attempting to finally wire up my retro MH, as it's been collecting dust on a shelf for the past year
Supplies are lined up: 16/3 wire & plug, soldering gun and heatshrink tubing.
I know which wires from the ballast go where, but I'm unsure of how to ground the reflector and mogul socket.
Can I just strip out a single strand from the 16/3 cord for this ground wire?
Should I use those butt-end circle connector thingies at the ends?

My ballast box has no grounding screw (or any bare spot, for that matter) to attach a ground, but there are slots (painted tho') for attaching with screws, to a wall etc.

Whats's the best way to attach the other end of the ground wire to the mogul/reflector? (between the metal mogul base, where it attaches to the reflector? See arrow in pic.)



Any and all help much appreciated!

~Tamara