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I hope you have better luck with the Drake part than I did. I got two of them that were open on the start circuit. Bought an NOS Autolite part and it worked. The Drake part had a 1969 style connector on the 1968 (so they said) switch.The main under dash harness is what the neutral switch plugs into.
Thanks for the info, but does anyone sell the wiring for this application? Build date on #906 is 1/30/67. I'll try and post a picture.
Royce is correct. 64.5 to 66 years had separate NSS/BU harnesses, different for automagic and manual trannies. The plug you are looking for will be found coming out of the firewall grommet where the engine gauge feed harness (oil, water, coil) attaches.
No one I am aware sells the short pig tail coming out of the firewall with the plugs that you are referring to . That section you will have to splice into your harness on the under dash side. If it were me I would find a donor harness to get the section from and splice it in . Many are in bad shape or wires are badly faded so be aware when making your selection. If you can't find one remind me (PM) after the first of 2021 and I will look . I try and keep old harness around for just such occasions.
WCCC sells both types. According to their website the change to a single connector happened December 1966. Their descriptions seem correct but both descriptions have the late style photo attached.https://secure.cougarpartscatalog.com/store/p/16345-Wiring-Pigtail-LATE-Under-Dash-Harness-Neutral-Safety-Switch-/-Back-up-Lights-and-Engine-Feed-Standard-/-XR7-Used-1967.html?sessionthemeid=26
Royce : I am confused by your statement here. If the change to a single connector was December of 1966, wouldn't it then be the late type connector, and not the one you pictured ? Or did you really mean from a single connector, or "the early style photo attached" ?I am curious because my January 31, 1967 Dearborn has the two connectors (picture attached).Bob
This may be a jumper that Ford used sometimes? Not sure of the plug end colors.