Circuit tester/jumper

A circuit testing and power source conductor device comprising in combination:

• an insulating, generally cylindrically configured handle having a longitudinal axis and a generally axial, hollow core open at one end of the handle;
• a conductive probe member extending from the hollow core axially from the end of the handle opposite the open end;
• a removable cap at said one end of the handle for closing the open end of the handle;
• a single conductive lead extending through the cap to the interior of the hollow core;
• a first conductive contact in the hollow core connected to the conductive lead;
• a second conductive contact in the hollow core connected to the probe member at the opposite end of the hollow core;
• a conductive biasing element and a light element in series connected between the first contact and the second contact;
• a conductive cantilever spring member connected at one end to one of said first and second contacts and displaceable to connect in series to the other of said first and second contacts, said conductive cantilever spring member normally biased out of electrical contact with said other contact member thereby providing a circuit testing device;
• and
• an insulated push button slidably mounted in the handle for movement generally transverse to the axis and positioned to engage and move the cantilever spring member to connect to said other contact member to thereby electrically bypass the biasing element and light element and provide a series power source conductor.