Idle Position sensor replacemenf

Yeh, no sensor except for one thing. The solenoid is just that, it powers on with the key anytime it's on, and as soon as you touch the throttle with your foot, if not on the choke, the solenoid pops up a little to increase idle. There were used for two purposes, for A/C increased idle, and for emissions. Some cars, B/RB, not sure about SB, also had a wire attached to the brass end that touched the carb throttle arm. This wire activated (grounded) the diistributor retard solenoid when the throttle arm was touching the brass knob. I "guess" on the AC cars they were powered by the AC compressor circuit.