On my 2003 Sportster LE with the 951 (carb) there is only one power connection coming off the battery. It goes to the master battery switch, and then from there to one side of the starter relay.
Does that mean that the relay is a single point of failure for all electricity? Based on the above, for the lights, blower, or stereo to work...power has to be flowing across the starter relay.
The reason I ask is my boat is dead. No lights, blower, beep beep, or stereo. The battery has been tested and is good. The master battery switch has been tested and is good. If I jump the starter relay posts with a screwdriver handle, it sparks and the boat cranks.
Is my problem just the starter relay?
Help me understand what the starter relay does
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