Finger tip steering conversion kit for old caterpillar dozers

I love older steering clutch Caterpillar dozers.
It seems nowadays that operator don’t wanna run anything unless it has modern controls.
Also, osha related injuries are attributed to steering clutch and shoulder arthritis etc.

A semi modern control is joystick(Hystat style) or fingertip steering.

For steering clutch:
Fingertip steering seems to me to be an electronic switch much like an electronic throttle control that sends a signal to a hydraulic actuator activated by a solenoid?...

Finger tip steering conversion kit for old caterpillar dozers

Finger tip steering conversion kit for old caterpillar dozers