Just picked up some NOS parts and this was just in a plastic bag. Looks NOS to me but can't figure out what it fits, any ideas? Part number on the fuse box is 2983640 which I believe means 70-71 A or B-Body. It has a round plug to go into the circuit board so that rules out B-Body rally dash. Let me know if you want to see any other pictures. Do not see any other part numbers on the harness.