Hey guys,
My dad has a '94 Bronco (full size) 351, etc..

Has no cruise,
Not the fuses, horn blows, checked all fuses, under dash and hood with test light.

Replaced clockspring to fix an airbag light, so it is new too.

Replaced cruise switch assembly, as well as the brake pedal switch.

Speedo works so I'm guessing it is not the VSS.

Also put a different servo on from a wrecking yard truck.

checked for power and ground at the servo using a diagnostics chart off Alldata, seems OK.

but tells me to test the "deactivator switch".

I found a "box" on the frame rail but am not sureif it is correct.
My wiring diagram from Alldata seems correct, but it is not correct (colors) on the written diagnosis chart...

So any common cruise inop problems for you Ford Techs, or does anyone have a copy of the 1994 diagnostic chart they can scan to me, etc...

Any help is appreciated,
Thanks

 

I had a customer once that wired a set of fog lights into their truck, and powered them from the same circuit the brake lights were on. Everytime they drove with the fog lights on, the cruise wouldn't work. Took me a week to figure that one out.

 

Have you checked the brake lights to make sure none are burned out?

 

No I have not but will tomorrow and post the results.

Thanks.

 

Brake lights are fine...