What was found
LOW FUEL WARNING SYSTEM WAS INOPERATIVE: WARNING LIGHT DOES NOT ILLUMINATE WHEN FUEL IS EMPTY. INVESTIGATION REVEALED SYSTEM COMPONENTS OPERATIVE SATISFACTORY, BUT A (BUTT CONNECTOR) REPAIR HAD BEEN MADE ON THE WIRE FROM CIRCUIT BREAKER TO SYSTEM AT AN UNKNOWN DATE BY AN UNKNOWN PERSON; REPAIR WAS NOT CRIMPED PROPERLY AND WIRE INSIDE INSULATION WAS SEVERED, PREVENTING LIGHT FROM ILLUMINATING. CONDITION COULD NOT BE DETECTED DURING PREFLIGHT BECAUSE THIS SN AIRCRAFT DOES NOT HAVE A (PRESS TO TEST) SWITCH FOR THIS SYSTEM, UNLIKE LATER MODELS WHICH DO HAVE THIS TEST SWITCH. IN COMBINATION WITH INACCURATE FUEL IDICATION SYSTEM, THIS IS A DANGEROUS SITUATION.