[rotorwrench]

As was mentioned, the only click would be when the operating solenoid is energized. A person may not hear a click when it drops out. The governor switch kicks in at approximately 25 mph on the way into OD and drops out at around 23 mph when slowing down. When a person floors the throttle pedal, the ignition coil is momentarily switched off until the solenoid drops out for passing. The dash relay is small and likely would not be audible when it clicks.

The operating solenoid has two stages of function. When it pops out during engagement, it first operates off the main coil which has a pretty good chunk of force to it. Once it gets to the point of full engagement, one of the two sets of points kicks in the holding coil that just has enough force to keep it fully engaged. This way it uses less current after the shift into overdrive. When it drops out, there is more of a thud than a click so it's generally not as loud.

The transmission is going to make a noise when shifting from 1st to 2nd but the synchronizer makes the 3rd gear shift fairly quiet. Shifting into reverse not only slides the low/reverse gear back but it also pushes back the lock out rod & fork so it might make a click that is audible.

These transmissions have by far more moving parts than a standard 3-speed so if something goes bad in the planetary or overrunning clutch then there could be all sorts of noises going on. Same goes for the gear box section.