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Old 08-16-2022, 03:57 AM
mrmark1957 mrmark1957 is offline
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Default Best place to get 12 volts for HEI dist

I want to put an HEI distributor in my 67 Catalina. Where is the best place to tap into to get full system voltage ?. If it is better to power it with a relay, does anyone know what type of a relay that would work best ?. TIA.

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Old 08-16-2022, 02:01 PM
rustyrelic rustyrelic is offline
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its been a good while, but I want to say the best thing is to remove the wire feeding the old points setup at the block on the firewall and replace it with a wire with no resistance.

I am confident someone will be along shortly to set us both straight.

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Old 08-16-2022, 03:28 PM
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mzbk2l mzbk2l is offline
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Pretty sure that's what I did in my '67 Olds, but it's been almost 30 years since I installed that HEI, so my memory may be faulty.

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Old 08-16-2022, 03:33 PM
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OG68 OG68 is offline
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I've found the easiest way is to use the spare ignition terminal on the fusebox.
But... not all cars have it. If you're good with electrical, it can be added.

Or add a Bosch 12 volt relay powered by the original resistor wire and a fused hot wire from the battery through the relay contacts to the HEI.

Leave the original resistor wire if you think you'll ever return to a points distributor.

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Old 08-16-2022, 10:23 PM
rustyrelic rustyrelic is offline
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maybe like this - https://forums.maxperformanceinc.com....php?t=830678y

See posting from formulajones

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Old 08-17-2022, 10:43 AM
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form74 form74 is offline
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I ran a jumper off the turbo 400 fuse

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