2001 s runner cruise control

Good morning. First post on this forum.

I need help identifying the manufacturer of my cruise control and any trouble shooting advice. I have the Rostra aftermarket switch. The green light on the stalk does come on however the cruise will not engage. I do have good vacuum

 

No ID plate on the Bottom of the unit ?

Has this ever Worked ?

Without a wiring Diagram trouble shooting will be so very difficult

Has the unit itself failed ?? Someplace one of the safety switches is open .



Best of Luck !!

 

Thanks for the response. Yes it did work at one time. I’ve had the truck for ten plus years. All my research (a lot of time) only comes up with the Rostra units. I am hoping that someone can identify mine from the picture. And you are right, without a a wiring diagram I’m dead in the water.