That's interesting. The CC must have some other safety feature to prevent engine overspeed. Some type of no-load sensing feature.

Yes, with an open circuit the CC will work because that is how the clutch sensing switch is: normally open. However your "closed circuit" question is difficult to answer because I don't know how you wired your kill switch. If you wired it in series with the clutch switch then the CC should still work because the clutch switch is normally open. If you bypassed the clutch switch altogether then you're right, the CC probably won't work but then again, I don't know if the CC even looks at the clutch switch when engaging. It might only look at the clutch switch for disengaging. I don't know how they setup the logic.

 

I believe that is a safety feature for when the wheels lose traction -- icy roads or hydroplaning, for example.

 

Hey guys, 308000 Miles in my 04 2500 !
I have been having the issue of having to play with my clutch pedal to start! After reading the forums, I decided I was not going to cut and splice! I was just about to order new one for $100.!
I decided to go out and clean mine with a parts cleaner and then used WD 40!
It's working great!!!

 

If you're having to push the pedal hard to the floor to get it to start, another trick is to slip a rubber washer (or two) onto the rod between the switch housing and the firewall. This makes the switch engage sooner, but the soft rubber also prevents you from crushing the switch in the event you do go down hard on the pedal. I've had to do it on mine a couple of times to get the switch to engage without having to bury the pedal. Although, it does make a good anti-theft option when someone hops in and doesn't realize how hard to push the clutch.