69 Charger - Ignition switch ground

[RobP]

I'm changing out my ignition switch because the key needs to be jiggled a little bit to move it and I'm having intermittent starting issues (not sure if it's related)
When I pulled out the old switch, the harness that attaches to it doesn't have a ground wire connected. The slot for it is empty as pictured.
Does anyone know if this should be connected to a ground and where?
Thanks for any input!

 

[RobP]

I found the wiring diagram and it looks like there isn't a wire connection there. All set!

 

[5.7 hemi]

The switch is grounded thru the dash frame, that’s why no ground wire.

 

[72RoadrunnerGTX]

No electrical need at all for a ground return path on the ignition switch.