[DANTIP]

I've been working with American Autowire to figure this out. I learned from the '72 GM service manual that the "A" body harnesses contained the 30A fuse lead that exits the engine harness back near the TCS connector. However, the service manual schematic for the "F" body does not show the wire/fuse assembly. So, my non A/C 72 T/A did have the connector that exited the harness back by the TCS connector but was obviously never used (dirty and the plastic on the end of the connector looked a little melted).

BTW, my harness had a tag on it that read "0484" "RL". I strongly suspect the 0484 is the last 4 of the part number (perhaps 8910484??) and the RL would be a build sheet code. If anyone has more info on the "0484" part number or a build sheet that contains "RL", I'd like to learn more.