I have an illustrated Ford parts book for those years. By the illustration It would suggest the harness goes at the bottom, or below the radiator cradle. It's a separate harness that joins at the LH side to go over to the RH side and then joins to a separate short harness to the headlight connections.
Ok so probably attaches to that bar going across the radiator brace. Now that I'm on the topic I was thinking about using a terminal block for the headlights. Would i just run the heavier gauge wire for each light to the strip, and from the strip to each light from the same post?
I mounted a terminal strip on the left inner fender panel. Terminals for the left signal, right signal, high beams, low beams, and park lights. The wires for the passenger side run across in front of the radiator below the latch panel. I use 14 gauge for the park and signals and 12 gauge for the headlights.