Electrical tester for small motor vehicles

A portable apparatus for passively testing without selectively controlling any of a plurality of different types of electronic circuits, including a power supply circuit with a switch producing a switched supply output, normally connected to a keyswitch board on a small self-propelled lawn and garden vehicle, said apparatus comprising:

• a housing,
• a connector jack on the housing having a plurality of terminals,
• a test circuit in the housing including an array of indicators connected across selected ones of the terminals for providing indications externally of the housing,
• said test circuit including a plurality of override switches for directly energizing a predetermined indicator and bypassing the associated portion of the connected electronic circuit, and
• a cable harness for connecting said jack to the keyswitch board and to selected ones of the electronic circuits including the power supply circuit for supplying signals to said test circuit from the connected electronic circuits so that said indicators indicate the conditions of said signals, one of the terminals of the connector jack being connectable to the switched supply output, at least one of the override switches being connected between an indicator and the one terminal for directly powering the indicator and confirming that the associated portion oft he connected electronic circuit is faulty.