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Thread: Mercury - Clean Power Circuit
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09-19-2021, 09:24 AM #16000 RPM
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Mercury - Clean Power Circuit
I'm currently doing a Merc V8 ProXS repower project and have encountered a wiring circuit that is new to me (Installation manual).
What is a "Clean Power" circuit? (2 wire 5 amp fused circuit directly from starting battery to ECM via 2 wire connector)
The circuit is non-switched and provides 12VDC to the ECM on a continuous basis?
Why not have a "jumper" circuit connected to the battery leads at the engine instead of 2 wires going all the way back to the starting battery?
What happens to the ECM when the circuit is disconnected? System reboot? Memory wipe?
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06-14-2022, 10:20 AM #2The Historic Photo Master
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...older post. what did you learn on this zebra?...
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06-14-2022, 09:34 PM #36000 RPM
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Clean power powers the bus. It's critical to have good unmolested power.
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06-17-2022, 01:37 PM #46000 RPM
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Clean Power Lesson
Nothing really. It's wired per installation manual. Still does not make any sense if the ground path is common and a "ecu jumper" wire is connected to the engine's positive battery terminal. Doesn't change a thing when it comes to circuit load / drain. I wish a Mercury electrical engineer would answer this post?
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