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    Location of fuse box on OX 66

    Oh, a circuit breaker. I am familiar with all kinds of those. I thought we were talking about a fuse.
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    Location of fuse box on OX 66

    I have never heard of an auto-reset fuse. Who makes them? What do they look like?
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    Yamaha 6Y8 command link

    As long as the ECU has never been replaced, yes.
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    04 Yamaha 225hp High pressure pump not turning on

    You. Wanting to know what was the source of the image that you posted.
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    Yamaha 6Y8 command link

    The 6Y8 gauge is going to be displaying engine ECU hours.
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    04 Yamaha 225hp High pressure pump not turning on

    Where did you get that document? Looks like it is more applicable to a Mercury 225 four stroke (made by Yamaha) than for a 2003 Yamaha F225TURC.
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    04 Yamaha 225hp High pressure pump not turning on

    What service manual do you have? There is not much in the way of a testing procedure. But this is not rocket science and you should be able to come up with something on your own. First things first. Do you have battery power to the driver when the key is on? On the red/yellow wire. Do you...
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    04 Yamaha 225hp High pressure pump not turning on

    The fuel pump driver is what turns the fuel pumps on and off.
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    Need info on buying correct wiring harnesses

    The wires for the trim are in the ten pin harness. The harness that connects to the 704 remote control box at one end and to the motor at the other end.
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    Need info on buying correct wiring harnesses

    https://www.partsvu.com/coupler-adapter-ld-704-82541-10-00.html?utm_source=google_shopping&utm_source=google&utm_medium=cpc&adpos=&scid=scplp704-82541-10-00&sc_intid=704-82541-10-00&gclid=CjwKCAjw67ajBhAVEiwA2g_jEFeccmVeFmIkh6BVL3Q5JM1m7jtqEdSEkOobRCvBy4G9rUVlvQ3WRBoCI7oQAvD_BwE
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    Need info on buying correct wiring harnesses

    Who brought up pin colors and what they go to? Are you not seeing the five wires with bullet connectors on them that connect to the bullet connectors on the 704 control box? That make up a harness that will plug and play with the 704 ten pin harness?
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    Need info on buying correct wiring harnesses

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    Need info on buying correct wiring harnesses

    Can you post a photo of your control box?
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    97 Yamaha 2 stroke

    Could well be the fuel pumps. Try using the primer ball to fill the carburetors. Crank the motor and see if it will start. If it starts, runs and then dies, have someone use the primer ball to refill the carburetors and then have them keep pump the ball while the motor starts and hopefully...
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    97 Yamaha 2 stroke

    Do you not know the model of the motor?
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    97 Yamaha 2 stroke

    Not turning over to me means the starter motor is cranking the motor. But then you report that it turned over for about two seconds, presumably having run for a few seconds. Is it not cranking or is it not starting or is it starting but not continuing to run?
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    Few wires on yamaha gauge not connected ?

    www.gaugesaver.com
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    Few wires on yamaha gauge not connected ?

    Blue direct to yellow if no switch or blue to yellow through an on/off switch.
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    Few wires on yamaha gauge not connected ?

    Blue is for the lights. Red is battery power. I would not think that you would want the lights to be on all of the time. Lights are normally turned on by the key being turned on or by a separate light switch, as shown in the diagram.
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    Few wires on yamaha gauge not connected ?

    Have you any idea as to the model of the motor or the type of gauges that you have? Might look something like this:
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