Abstract: An on-site test unit is for an electric motor having an electronic timer having motor control contacts and a parallel capacitor completing a power connection with the opposite power connection being common. The test unit includes a portable housing with a fused power cable and an output connector. A switch, with a parallel test lamp, connects the power cable to connector output terminals. An internal test load lamp in parallel with a capacitor is connected in series to a control terminal and to a power terminal. A selection switch selectively supplies power to the terminals. For testing, the normal power supply is disconnected and the common connection to the motor and timer is opened. The connector may include a plurality of leads with terminal clips or releasable plug-in connectors in the motor and test unit. A dummy connector provides normal motor operation. In a motor test, the motor is connected by the selection switch to the power switch and cable.