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Onan phantom battery drain [message #297537] Thu, 17 March 2016 12:34 Go to previous message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
Senior Member
OK folks, I have been out there measuring and pulling wires....

The Onan (our is old remember an the Onan has its own battery) start battery has a 15~25ma drain when sitting. It should not and it didn't used to.....
I can measure this at terminal 11. If I have been out there pull the Molex and independently supply power at 11(+) and 1(-) the drain is not there. But if I plug the Molex and measure the drain at the fuse, it is there no matter what terminal I disconnect. This is below the sensitivity of my Bell/Fluke DC probe.

Fortunately, I have KenH's clearer diagram for help. (Thanks Ken)

Any Ideas??

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
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