Hi guys! Hoping you can help diagnose the drain on house battery (0.8A) when everything was switched off. Everything functions normally (which is hot wired to the battery - such as bilge/mercathode etc). I came across a similar thread which suspected the Alternator, so I tested the wire loom (with everything switched off). I found a 0.4VDC voltage from the battery output and sense wire, with a closed circuit between the two. (Five wire Mando alternator). When the Alternator is running, it sits at 15.8VDC without fail and slips the belt a bit - indicating it's under high load. On a random day, the activation of the trim motor killed all the voltage to the ignition and the engine died while the trim switch was pressed. Any ideas would be greatly appreciated... the Owners supplement wiring diagram doesn't have the alternator on it, just the starter motor. the only other thing that could be wrong could be the current is getting past a (faulty) battery switch..... 1997 Searay 250DA, 7.4L Mercruiser Carb TB5 ignition serial 0f809867 Thanks in advance!