2004 Cummins QSB 5.9 – LOSING GAUGES

so far we removed the motor plug to the gauges, found some corrosion in the pins, cleaned them, have a lose pin, going to tighten that next – when the gauges go out we lose the oil pressure, volts, tach and fuel flow stops recording usage – motor has Smartcraft gauge cluster – replaced the Cummins Marine Harness SmartCraft V1.0 “Medusa” – replaced Cummins Mercury SmartCraft Tachometer Harness 84-879979T1 – replaced Cummins Mercury SmartCraft 6-Way Junction Box – problem is back but spotty – sometimes gauges don’t go on at all, sometimes they work for a few hours and go out – any thoughts?

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