Sorry for the brief details. I was hoping that someone had the silver bullet for this.
Sounds come from the right side dash. I rode as passenger and attempted to isolate the ususal suspects: glove compartment door, contact points between dashboard interfaces, contact points between vinyl and plastic, radio support point. I used paper to minimize the friction between the above areas. All to no avail.
I'm afraid the problem might lie in a loose wiring harness inside the dash. In that case, the cure is worse than the disease.
Thanks for any help!