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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

engine swap wiring (i need help)

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Old Jun 5, 2012 | 08:12 PM
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FordForLife_69's Avatar
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engine swap wiring (i need help)

ok i am in the final leg of my swap, i put a 1990 5.0 from a mustang gt in my 69 f100. how the heck do i wire in the 2g alternator to the truck since iam not running efi or a computer just stock f100 harness? also since i am running an electric inline fuel pump what is the best power source for that? please help! thanks.
 
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Old Jun 14, 2012 | 11:43 AM
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The fuel pump needs to work off the ignition switch, as it needs to turn off when you shut the truck off.

Here is a link to a site that shows the wiring for Ford alternators:
Alternator wiring diagrams: 1G, 2G, and 3G
 
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Old Jun 14, 2012 | 01:53 PM
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HIO Silver
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Originally Posted by FordForLife_69
ok i am in the final leg of my swap, i put a 1990 5.0 from a mustang gt in my 69 f100. how the heck do i wire in the 2g alternator to the truck since iam not running efi or a computer just stock f100 harness? also since i am running an electric inline fuel pump what is the best power source for that? please help! thanks.
The fuel pump's power source should be from the battery via a a relay energized by the ignition switch in both start and run.

Consider adding a kill switch.
 
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