Thanks hugely for the reply intakerGS.
I've had the car a week now. Update- Car died two times today, now at a shop.
I'm guessing an alternator replacement? Didn't seem like it was a connection issue to me. Vehicle showed low "juice". Cruising at 60 and nav screen went black. Then rpm dropped to low 100s. Then instrument cluster lights went out and engine shut down. Pulled it over and after 15 mins, restarted and drove in to work no problemo, but initially showed weak lights and weak crank/starter power. Even started up fine on the way to the shop hours later, but died again on a busy street and had to be hauled in. Has a new battery from prev. owner(this happen before?) and came with info. from a prior mechanic that the battery wiring "harness had to be kept clean because it would eventually corrode."
I found a piece of the brakes (not sure what- most of my auto knowledge is theorhetical without practical experience- part of my job), was sliding way out of position and contacting the inside of the rim, scouring a groove as the wheel rotated- likely at least one source of the sound. Maybe a loose/broken/wrongly installed brake pad? I'll find out soon anyway. Looking for local shop with a good roadforce balancer, wheel equipment, experience grinding off chrome, etc. (shouldn't be hard to find.)
Remo Aaaangry...