Aux waterpump

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JASONGDS's picture
Joined: 15.07.2011
Location: High Peak
GWOA Groups: Members

The extra waterpump on my 463 , the small 12v one near the bulkhead, how do you tell it' is working? Can you hear it when the ignition is on? Presume these are generic parts? No over heating but just wonder if heater is working as it should?