The Ford Barn

farmertom · 04-20-2022, 09:25 AM

what would be the correct amp. rated toggle switch for my 6volt priming only fuel pump? thanks, Tom.

Flathead Fever · 04-20-2022, 11:47 AM

Seems like a lot of people use an Airtex E8902 6V pump. I found one guy that posted he installed one and the instructions said to use a 10 amp fuse.

I wire mine so the early Ford ignition switch controls a relay that powers a separate fuse block. The relay handles the amperage instead of the factory ignition switch which is probably not rated to handle the ignition and the fuel pump. The relay controlled fuses provide the voltage to the ignition, fuel pump, voltage regulator... the electrical parts that make the engine work. When I turn the factory switch off it stops the ignition and the pump. That way I can't turn off the ignition and forget to turn off the fuel pump. I also run the pump wiring through an oil pressure cutoff switch that is bypassed while cranking. You can still put an additional toggle switch in the circuit or a momentary switch. I add extra bare spade connectors to switch's and relays... and I carry a spare jumper wire so that if a relay, oil pressure cutoff switch fails I can quickly bypass them with the jumper wire.

koates · 04-20-2022, 11:53 PM

It al depends on what type offuel pump you are using, but I think a switch that is rated at about five amps would be OK.

farmertom · 04-21-2022, 10:46 AM

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Thanks to all,I got the new switch for my primer only fuel pump replaced.while under dash saw that the wire from pump has a modern 2 prong 15 amp fuse i went with a 15 amp rated toggle. Tom.

04-20-2022, 09:25 AM	#1
farmertom Senior Member Join Date: Jul 2020 Location: iowa Posts: 133	replacing 6volt elec. fuel pump switch what would be the correct amp. rated toggle switch for my 6volt priming only fuel pump? thanks, Tom.

04-20-2022, 11:47 AM	#2
Flathead Fever Senior Member Join Date: May 2010 Location: Yucaipa, CA Posts: 1,094	Re: replacing 6volt elec. fuel pump switch Seems like a lot of people use an Airtex E8902 6V pump. I found one guy that posted he installed one and the instructions said to use a 10 amp fuse. I wire mine so the early Ford ignition switch controls a relay that powers a separate fuse block. The relay handles the amperage instead of the factory ignition switch which is probably not rated to handle the ignition and the fuel pump. The relay controlled fuses provide the voltage to the ignition, fuel pump, voltage regulator... the electrical parts that make the engine work. When I turn the factory switch off it stops the ignition and the pump. That way I can't turn off the ignition and forget to turn off the fuel pump. I also run the pump wiring through an oil pressure cutoff switch that is bypassed while cranking. You can still put an additional toggle switch in the circuit or a momentary switch. I add extra bare spade connectors to switch's and relays... and I carry a spare jumper wire so that if a relay, oil pressure cutoff switch fails I can quickly bypass them with the jumper wire. Last edited by Flathead Fever; 04-20-2022 at 12:30 PM.

04-20-2022, 11:53 PM	#3
koates Senior Member Join Date: May 2010 Location: Melbourne Australia. Posts: 2,078	Re: replacing 6volt elec. fuel pump switch It al depends on what type offuel pump you are using, but I think a switch that is rated at about five amps would be OK.

04-21-2022, 10:46 AM	#4
farmertom Senior Member Join Date: Jul 2020 Location: iowa Posts: 133	Re: replacing 6volt elec. fuel pump switch Sponsored Links (Register now to hide all advertisements) Thanks to all,I got the new switch for my primer only fuel pump replaced.while under dash saw that the wire from pump has a modern 2 prong 15 amp fuse i went with a 15 amp rated toggle. Tom.