A 72 dash harness will have two buzzers, key minder and seat belt warning, a seat belt warning light and a TCS relay that are not on a 70 - 71 harness. The seat belt warning wiring is pink/white and yellow/black for the light and the buzzer. The buzzers may not be attached but the harness will have the connections for them. Also the wiper switch connection has 4 wires on a 72 harness, 3 wires on 70 - 71 harness.
Is it possible to have a 72 harness without the seat belt buzzer/light. I have what I beleive to be a 72 harness. I located the seat belt buzzer (two connections orange and pink/blk) and TCS (4 pin connector with 3 wires, blk, dk blu, tan). THe harness does not LOOK like it has been modified but I cannot find any evidence of the lamp or buzzer connectors nor the wire colors you mention. Also my schematic for a 72 center section SS is much different than the harness I have. Almost none of the wires match at the bulkhead connector.
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