1990 390 Express - Engine on breaker keeps blowing

tahitijim

New Member
Jul 13, 2017
3
Lake michigan
Boat Info
1990 Sea Ray 390 Express
Engines
454 Gas Plus generator
I have replaced the Ignition Rocker switch - it still keeps blowing. Its the STBD motor switch. Nothing obvious, anyone have a place to start?
 
Under what circumstances does the breaker blow? Cranking, running?
 

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