You know I love old sci-fi movies and I recently came across a 1966 movie titled "Cyborg 2087", that every Terminator fan should see.
Michael Rennie of "The Day the Earth Stood Still" fame stars as Garth A7, a cyborg sent by a future civilization back to 1966. His mission is to make sure that the revolutionary "radio-telepathy" technique being engineered by Professor Marx (Eduard Franz, "The Four Skulls of Jonathan Drake") does not come to fruition. The thing is, in the future, this technique will be misused by evil minds and bring out about chaos. Once he is back in the past, Garth gets scientists Carl Zellar (Warren Stevens, "Forbidden Planet") and Sharon Mason (Karen Steele, "Ride Lonesome") to help him out, while being hunted by assassins dubbed "Tracers".
If this premise sounds familiar, it should: it was also utilized around this time by Harlan Ellison, as an episode of 'The Outer Limits' titled 'Soldier'. Of course, it would eventually be appropriated again, famously, by James Cameron for "The Terminator".