I’m in the middle of resurrecting my tilt column after the near fatal fire. It’s a 70 XR7 4 speed. I bought an NOS turn signal switch and it has 9 wires where the crispy/burnt up switch had 10. Is the missing circuit for a key warning switch? If so, is that separate from the turn switch? My schematic shows it to be a black wire and the NOS switch doesn’t have a black wire.
Yes, that black wire is for the key warning relay buzzer. I’m very surprised that a D0 turn signal switch doesn’t have that black wire, as 1970 was the first year for Mustang/Cougars to incorporate that feature.
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