Hi Alex, I'm in the exact same situation, follow the link above.
Here the basics I learned recently:
1- There are two type of Cruise control systems (also called by Ford "Speed Control". So let's use «SC»):
• For Bullonose era, vacuum SC type.
• Later trucks got electronic SC type.
2- There are two types of Bullnose OEM kits:
• The Factory Installed SC kit (FIK)
• The Dealer Installed SC kit (DIK)
There is also a "Gary Installed Kit", since Gary adapted a
later electronic SC to his Bullnose truck. He related this in Big Blue's Transformation thread (you'll find the link in my thread).
The FIK comes with a steering horn pads equipped with SC buttons.
The DIK comes with the control buttons on an arm that replaces the turn signal left arm.
Although these two OEM systems are "vacuum" based, they also rely on some electronic controls, module and relay. For what I understand, the main difference remains in their servo unit (which control a cable linked to the carburetor or fuel injection). Bullnose servo is vacuum operated, and the
later servo are electrically motorized.
With these basics on hands, I suggest that you join us in the thread I started and that ford4life mentioned above. I am presently learning the how to's, so come and join me!
See you there!
Jeff / 1984 F350 Crew Cab 4x4/5.8L w351 4V/ T18/ D50 4.10 front/ 8' bed.
Restored 2019-2022.
Nicknamed «Big Brother 1984», due to its soooo-looong shape & nod to George Orwell's 1984 famous novel.