Thread: Holley 4150 Carburetor - Is this the vacuum and what is the 2nd electrical plug for?
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Old 03-29-2019, 08:53 AM
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Grubby Grubby is offline
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Join Date: Nov 2007
Location: Clayton, IN
Cobra Make, Engine: ERA 838
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The electrical connections are for your electric choke. One is B+(12v) and the other is ground.

The ground has been grounded to the carb. It should work like that.

Then just run a wire from a source that has B+(12v) when the engine is running. It is really simple.

John
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