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Voltage drops while driving

Yahoo Message Number: 107864
I have a 2000 Intrigue (11125) with a Cummins 350hp.

While driving the volt meter will show the voltage dropping and then going back to normal then drop again. Occasionally the voltage drops off and the gauges go dead and then come right back.

My Silverleaf shows the alternator putting out 13.8 volts and the silverleaf log does not show any voltage drops. I don't notice any change to engine when the voltage drops.

With the engine off but the ignition on voltage at the battery is 12.8, at the chassis fuse box it's 12.4 and at the ignition fuse box it's 11.4. According to the wiring diagram, the ignition fuse box is feed from the battery through the ignition solenoid and the chassis fuse box is feed directly from the battery.

My chassis battery is new this summer the battery cables and ground post were cleaned when it was installed.

I'm looking for suggestions as to what may be drawing the voltage down and the location of the ignition solenoid.

Steve Harrison

2000 Intrigue 11125