Anyone ever see a tv series where the star, Lockwood, had a ring (also wearable as a pendant) with a camera that enabled his mission command to see everything he saw and get him out of jams.
Wow, you are really showing your age, as am I by recognizing the description.
You are referring to a pilot TV movie:
Probe (1972)
But, by the time the series was aired, it was renamed to:
Search (1972)
It only lasted for 1 season.
The trivia section for the series in IMDB says the series had to be renamed because a science show on public television claimed rights to the title. That may have only been the excuse.
As I remember, the series almost didn't get aired. Reportedly, when the series was pitched to network executives, someone thought it was appropriate to entertain them prior to the previews with footage of a scantily-clad dancer. The execs allegedly made the leap to the double entendre of "Probe", and were horrified. This was back in the early 70's, when sex on TV was still all but banned. It was only after the producers agreed to change the name to "Search" that the series was given the green light.
I remember seeing the pilot, and was eagerly waiting the premiere. A news story about the upcoming fall TV season recounted the story I wrote above. I found a reference on the Wikipedia page for the series to a feature article in TV Guide, but haven't found the article itself. I'm wondering if that's where I read it long ago.
Both the pilot and the series are available on DVD from Amazon.