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Yamaha start isolator? Or safety thing?

C

Checker130

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I have a Yamaha 70b (old girl). Got her all hooked up to the battery. POS on the positive side of the solenoid, neg connected to the engine block. I’ve also connected the multi black main controller but when I turn the key, nothing.

The main controller connector coming from the outboard has a red wire with an inline fuse that spurs out the side of it. Is this some sort of cut off switch that needs power?

I’m new to outboards and this thing is driving me nuts now.

If it should be turning by now then it must be a fuse somewhere otherwise.
 

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The red wire is what conveys battery voltage to the key switch. So that the starter motor will work. And for other stuff.

The black gizmo in the wire should contain a fuse.

But the bullet connector also needs to be connected to another red wire so that battery power can get to the red wire that is connected to the ten pin connector.
 
boscoe said:
The red wire is what conveys battery voltage to the key switch. So that the starter motor will work. And for other stuff.

The black gizmo in the wire should contain a fuse.

But the bullet connector also needs to be connected to another red wire so that battery power can get to the red wire that is connected to the ten pin connector.
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I know I’m asking annoyingly stupid questions. The red wire is jumping out of the side of the black main controller connector coming from the outboard. But there is no connection for it on the end the connects to the controller itself. So what should that red wire connect to? The 12v battery?
 
Does the motor have a sticker that shows the month and year of manufacture?

The battery cable goes to the starter motor relay. At the point where the battery cable connects to the relay there should also be a red wire connected there as well. That red wire should have a bullet connector at the end of it that connects to the red wire that has the fuse and which goes on to your ten pin connector.
 
boscoe said:
Does the motor have a sticker that shows the month and year of manufacture?

The battery cable goes to the starter motor relay. At the point where the battery cable connects to the relay there should also be a red wire connected there as well. That red wire should have a bullet connector at the end of it that connects to the red wire that has the fuse and which goes on to your ten pin connector.
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I have this photo from the bottom. It’s 1990s I think. She’s in pretty good shape and I’m trying to learn as I go Sir. I’m not any kind of engineer. I think I may need to get someone out to help me. I just wish I knew more about outboards.
 

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You are no fool. You are just having to learn. Like everyone else here and everywhere.

Can you take a photo of the starter motor relay and post it please?
 
boscoe said:
You are no fool. You are just having to learn. Like everyone else here and everywhere.

Can you take a photo of the starter motor relay and post it please?
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That’s really kind of you to say. Honestly I try and learn new things outside of that which I have done before and end up feeling like I’m an idiot driving those that understand crazy 🤪

Attached is a photo of the solenoid. You will see connected to the positive pole is my lead that feeds to positive on the battery.

next is a photo of the starter with the neg connected which goes, again, to the battery.

Lastly is a photo of the fused red lead that jumps out of the side of the controller lead coming from the outboard. I can see nowhere it is supposed to connect to. And I’ve looked everywhere. I tried giving it a positive feed from the battery with everything connected and still the motor will not turn at the key. The fuse in that little red wire is still fine. You will also note the pink and brown wires that jump out of the controller. The pink feeds to the front and is connected and the brown feeds to the solenoid.

I did do an ohm test of the solenoid with the battery disconnect by putting my new multimeter on the pos and neg posts and got no reading at all. I then did a volt test of both the solenoid and the starter with the battery connected and both were getting over 12v

Either, something is broken or I’m missing something really stupid and unable to understand what.

I really appreciate you taking this time. Thank you
 

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