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Should the black from wiring harness be hot at all times? When I use a test light the light never lights up. If there is fuse for this black where would it be located?
 

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Piaggio MP3, was 02 GL1800
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Are you talking about on top of the fuel tank where the fuel pump wires are?

If so, the black wire power is controlled by the ECM. There will be no power there at all with the key ON, until the Starter button is pushed.

While the starter button is pushed power is applied to that black wire. The ECM continues to control that power for as long as the engine is running.
 

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Discussion Starter · #3 ·
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Yes, I am referring to those wires on top of the fuel pump. After lunch I will try this and let you know. Can't get any response from the pump even removing from the tank and running directly from the battery so am assuming the pump is kaput.

Thanks for your help.
 

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Bruce County Boy/Snowbird
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