When wiring the tape recorder into the squad, Gage accidentally shorts out the electrical system, and when DeSoto tries the overhead light bar it doesn't come on, yet a few seconds later when a call comes into the station they peel out in response and all the electrical equipment is functioning.
There is no explanation for Johnny's ineptitude in installing the recorder. There is no way he could've cross-connected the recorder to the radio. This time the writer's went way beyond common sense in trying to show how badly Johnny could perform very simple procedures.
For some reason, Roy and Johnny do not bring the bio-phone into the beauty parlor to assist the woman doped up on steroids, using a land line instead. It is not explained why this was done.
After loading the car crash victim into the ambulance, lighting equipment is reflected in the ambulance window.