yes! I just replaced the old, cut up, mangled, spliced, rat chewed, burnt, dash harness with the the correct one(70-9/71). Then I later find out that it has later style (10/71 plus) switches in it as well.
But to answer youre question more detailed... The cars manufactured from 70-9/71 used a different dash harness as well as a blinker and headlight switch to match with it.