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Re: Alternator to power fuel pump? [message #370437 is a reply to message #370436] Thu, 01 September 2022 19:40 Go to previous messageGo to previous message
JohnL455 is currently offline  JohnL455   United States
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
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Senior Member
It depends how the pumps like 14-15 Volts. Probably fine.
Issue is pre run for the pumps and if alternator output will run the pumps during cranking. Personally I would use the alternator to drive a relay coil which then gives normal system voltage to the pumps. You could add a momentary switch to latch the relay using engine batt power to prime or during cranking.

John Lebetski
Woodstock, IL
77 Eleganza II

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