Electric Cruise Control into M1028A3 6.2 Th400

[Batzen]

Hey Guys i bought an electric cruise control out of a '92 K2500 6.2 Th700.
Now i need some info on the vehicle speed sensor and my speedo, because the harness needs to connect to it.

Here is the harness:


I have to modify the brake light connector, because the switch is different in my cucv. Also there is a kind of a cruise control shut of switch (above the brake light sensor), i don't really know what its for and what it does (something to do with the overdrive lockup from the donor th700??). Should i put a manual switch on the dashboard for it?

Also i need to connect the orange connector to a VSS. Is there a VSS on the back of the speedo? Or do i have to buy one and attach it to the speedometer?
Bracket and Servo seem to fit nice to the IP.

Thank you in advance for your ideas.

 

[Recovry4x4]

You will need to obtain a speedo with the output on it. That's all I know and that's only from buying junkyard parts.