The blown fuse is everything.
The circuit is coil + to the ( EDIT usually the fuse ) to the OPSS and then to the fuel pump. The fuel pump then supplies the ground via mounting. The OPSS is a low pressure safety switch that requires minimal pressure to close, supplying power to the fuel pump only when the ignition switch is on, and the engine creating oil pressure ( I.E. Running).
Bring a spare - if the fuse blows again, you've got a problem in that circuit.
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Jeff
S/V Bunny Planet
1971 Bristol 29 #169
Last edited by BunnyPlanet169; 07-03-2016 at 10:31 AM.
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