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525 efi change over


525 efi change over

Old 09-08-2021, 06:13 PM
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Default 525 efi change over

Does anyone know if the main plug connector is the same on a 496 ho versus 525 efi? I am trying to figure how much trouble it would be to switch them. Thanks!
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Old 09-08-2021, 08:07 PM
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Depends on the generation of each. Either one could use a 10 or 14 pin connector depending on the year
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Old 09-09-2021, 06:14 AM
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https://www.michiganmotorz.com/mercr...r-adapter-plug. Call up Mercury and give them the part number in this link and ask if it will work with a 525 efi. Would be best if you know the year of the motors in question. What pin is on your 496 now?. If its 2006 or later its probably a 14 pin. Great lakes skipper has them for 1/2 the price of Michigan.

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Old 09-09-2021, 07:56 AM
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Are you switching from 496 to 525? If so we used an 14 to 10 pin adapter, I think CP carries them. Problem was a couple gauges did not work, the simple solution to this was to add sending units and run dedicated wires to the gauges. Been a while so I do not recall which ones did not work.
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Old 09-14-2021, 08:44 PM
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What year boat and what year motor?
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