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All circuits are connected to the 40 amp main fuse, see image below.
When doing the draw test, pull the fuses one by one and check if the draw stops at a certain fuse. That's the circuit causing the draw.
We don`t know how many milliamps the battery is discharging yet, so we don`t even know if there is excessive battery drain.
127 is what is was drawing and there and is no alarm on the bike, Its is an ex police motorcycle. Which I probably should have listed also. I have a code for the speed sensor which I just pulled out and it had a bunch of metal on it.
Many times using a meter to find a battery draw is a pain in the azz...especially when working by yourself...I like to use an incandescent 12v bulb...
Hook it up between the negative battery cable and post...and start pulling fuses till it goes out, or dims as you could have draw on more than one circuit...
If the diagram above is the correct one for the bike it is clear the BCM is always powered and so will the ECM and will only stop drawing current when the main fuse is pulled.
2014 FLHP's wiring diagram differs from the one I posted.
FLHP's wiring diagram shows that the BCM and if equipped the ABS ECU are connected directly to the 40 Amp Main Fuse.
ECM gets its 12 v power from the 5 Amp Battery fuse circuit
Last edited by FXD2003Rider; Apr 28, 2020 at 03:55 PM.
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