RIGGING OPTIMAX TO 4S

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Serial number is in my signature below.

Removing my single 03' Optimax 200 and installing a 2023 250 plain 4 stroke (NON verado) that's in my signature. Optimax is rigged with two sc1000 smartcraft gauges (speed/RPM) so I believe the harnesses needed are clean power and the 8 pin adapter harness 84 896542T01. My question is, am I removing the speed paddle wheel mounted on the stern and the ambient temp sensor on my dash?

If anyone performed this repower, I'm open to advise/lessons learned.

[EuropeanAM]

Rigging Tube
14 pin Keyswitch Harness (rather than adapting your old one + extension + blue harness)

Master Reset the System Tach & Speed

You can remove paddle and water temp if you like. Air temp is up to you... it's at the console.

3/8" fuel line straight from tank to engine.

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Thanks Don!

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My 2022 Mercury mechanical 250 4s serial number is in my signature.

Just be be certain before removing the blue cable I have to ask.

If I use Mercury 896537K24 14 pin ignition harness NON DTS, I remove and trash the blue gauges cable pictured below?

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[EuropeanAM]

You would not need the blue harness if you're using a 14-pin, Non-DTS ignition switch/harness kit, as all those circuits are included in the harness kit already.

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Thanks.

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Don,

My new 14 pin harness has a two confusing connections consisting of two wires each. One is for the neutral safety switch on the shifter (yellow/red) and the other is the kill switch lanyard (black/white).

The wire's color code on my optimax shifter and lanyard doesn't exactly match the color code on the new 14 pin harness. I assume as long as they're connected all is good because the two switches are a simple open/close switch?

[EuropeanAM]

Neutral Safety should still be yellow w/red stripe.

Lanyard black to black, black/yellow to black/yellow will work. If you have a different color on the 14-pin, I'll need to know the actual colors as I don't have one here on my desk. :)

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My original optimax Neutral safety has two yellow with large red stripe wires. My new 14 pin wire harness has two yellow wires but one has a large red stripe and the other a very small red stripe. (I assume it doesn't matter how I connect it?)

My original optimax lanyard has two wires, one is black/white and the other is black/yellow. My 14 pin wire harness has two wires, one is black and the other black/yellow. (I assume black goes to black/white?)

[EuropeanAM]

Correct on both.

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Thanks Don.

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Do I need a terminating resistor in my 5 position J-box? (mechanical shift motor)

I already have one resistor on the motor's vessel view mobile and another one on my 14 pin wire harness.

[EuropeanAM]

There should be ONLY TWO Terminating Resistors in your entire system. One 10-pin on the engine, and one on the keyswitch harness (blue two-pin resistor). Do not plug any additional 10-pin resistors into anything, anywhere.

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Thanks Don !