The Mustangs do use stand-alone cruise. I believe the thinking is since the Cali MAF panthers did not use it, perhaps the control hardware exists in the Mustang ECM as well, even if its not active or connected.
Curiously early 4.6 cars ran stand-alone cruise, the same module the early boxes did. They have a different part number but it will plug into the old system and work just fine. That cruise control system dates back to the 1970s. I've actually got an old book about new and awesome electronics in cars that was published in 1973 I think, and it has a pretty extensive description of how it all works, circuit diagrams of the module, and the wiring for the system. Not a bad design if it survived essentially untouched from the early 70s through the mid 90s at least.
Curiously early 4.6 cars ran stand-alone cruise, the same module the early boxes did. They have a different part number but it will plug into the old system and work just fine. That cruise control system dates back to the 1970s. I've actually got an old book about new and awesome electronics in cars that was published in 1973 I think, and it has a pretty extensive description of how it all works, circuit diagrams of the module, and the wiring for the system. Not a bad design if it survived essentially untouched from the early 70s through the mid 90s at least.
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