I have checked voltage at the .6 resistor after vehichle fires off and should be running on that one - it has only 4.85 V going in (I believe it should be getting battery voltage from the switch gear ??? and then have about 3 V going to termminal 15 ??? when vehicle running and it has only 1. 5 V - car will fire off then dies within 5 seconds or less - does this sound like that switchgear is failing ??