Idle up issue

Why do you have the jakes switched on while you're shifting? If you're leaving the switch on between downshifts, the jakes should disengage when you tap the accelerator.

As far as the truck not idling up, make sure the clutch switch is securely mounted and properly adjusted, and that the wiring connector is snug. Do the same thing for the switch on the brake pedal.

 

Years ago, there were 3 switches for a jake, the toggle switch, one on the throttle and one on the clutch pedal, all designed to shut off the jake when shifting or accelerating. I think in your case, it's an adjustment on the clutch pedal one.

 

Does the clutch disengage the cruise? If so, the clutch switch isn't your problem.

 

Which is exactly why I told you to check the mounting and the adjustment of the clutch switch. Resting your foot on the clutch is probably wearing the switch out.

But again, that shouldn't be necessary because the throttle should deactivate jake.