Did an F350 brake booster and I lost cruise control..

All that might have affected cruise control that I can think of, uh, unplugged the plug at the brake pedal that goes on the end of the booster, the one at the MC for clearance so I could get the booster out and I unplugged vacuum from the cruise control, just the line to the unit.
Plugged them all back in, I checked these 3 items and they all seem fine, am I missing something I might have unplugged while doing the booster or can you all think of something I should check?

1990, 351w E4OD.. has the cruise with the check valve and vacuum canister.

Can't 'set' cruise control.

 

Does it have a vacuum dump valve at the brake pedal? If it does, and it's dumping with no brake pedal pushed, the cruise won't set because there would be no vac to the cruise unit itself.

 

Where does the vacuum go to? I vaguely remember vacuum to my brake pedal, but can't find any line or plug for it.. it's possible I stuck something up out of the way and can't find it now, I do stupid stuff like that.

 

Okay, it's at the very top of the brake pedal. I remember accidentally lifting my brake pedal all of the way, maybe I knocked it out or something, I'll check it. Thanks..

 

Yep, that was it.. I pushed that vacuum switch in too far when I had my pedal unhooked, just had to reset its position. Thanks man, this has been driving me crazy.

 

my cruise isnt working at all, i have power to the controls (they still light up) i have never messed with a crusie control before, i read your post about what problems you were having, but i honestly have no idea. i have manual that someone sent me online but i cant find where is says CRUISE CONTROL fuse or anything. is there a few steps i can take myself to trying to fix this, without having to take it to a mechanic??? any help or advice would be great

 

Some years ago i hooked up to one of my fatherinlaws trailers and it was wired wrong. It took out one of the fuses for the rear lights cant remember if it was the stoplites or turn lights but it shut down my cruise control too.

 

It depends on your brake light switch, so if your brake lights aren't working neither will your cruise control.
There is also this switch at the top of your brake pedal with a vacuum line connected to it, the switch is suppose to be fully depressed when your brake pedal isn't pressed, if it isn't, you need to pull it down so it's depressed when your pedal is at rest. This is what happened to me, mine got pushed up.

 

the "button" or whatever, thats with teh break peddle is inside the cab, not something thats through teh fire wall or anything. i love my truck but it is absolutey dumb that there is not a fuse map in the fuse covers!!!!

 

Check the small switch on the front top of the master cylinder, if you unplug it an there is break fluid present, than the switch is bad. This is the cruise disconnect switch.