Battery Clinic checks if the solenoid is working. The solenoid should click as the contacts close if it is working. If it does not, the fault may be in the ignition switch or its terminals, the wiring to it or the solenoid itself. To check that the solenoid is delivering current to the starter motor, we connect a test device between the output terminal of the solenoid (leading to the starter) and earth, preferably the battery earth terminal. Working the starter switch should show on this device. If the solenoid is faulty then this could be harmful to the Car Battery. If not, then the fault could be with the starter motor. Again we will advice and recommend an auto electrician.