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This is from a Mercury service manual for the OP's voltage regulator. But even if the regulator tests well, with no DC output with...

You are seeing battery voltage on the stator output wires with those wires not connected to the regulator?

It is a voltage regulator. Not just a rectifier.

I just want to give a Big Thanks to all the mods. You’re all rock stars for donating your time to running this great forum. Thanks to all

like Boscoe99 said the yellow wires need to be disconnected from the RR when testing for AC to see if it is putting any AC voltage

With engine turned off I get battery voltage at the two yellow wires from the stator at the junction box near the coils.

No, mine with cash from me Boat didn't have a trailer, so I pay them 49K

like Boscoe99 said the yellow wires need to be disconnected from the RR when testing for AC to see if it is putting any AC voltage

That is normal behavior for the tach.

The slave solenoid battery post is often used as a junction for all wires carrying a continuous +12VDC power. So if you have any wires...

When I turn the key the tach moves to zero and the volt gauge moves the 12.5volts

yep . One of the things that makes a good mechanic ( or any repair man ) is the ability to diagnose the problem and one advantage a...

There is no bench test for a voltage regulator that I know of. You could feed it 16VAC and see what it puts out. It should try to put...

Yes, I was going to offer some guidance and technical assistance on that. :LOL: Probably twin 250 HP

So, is the dealer taking your boat (Chap 280) and trading it for the Formula 270. . . . Like an even swap?