12vdc directly to the HEI system. 
Hei power
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 1,133
Likes: 2
From: GEAUX TIGERS PSL FL.
Hei power
So I was thinking about running power to my HEI directly from the battery with a toggle switch and a 20amp fuse. I know I know not the way to do it. My line of thinking is that this would give me kind of a anti-theft device given that the toggle would be hidden. Go ahead, I live in Florida and i`m used to the heat.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
So I was thinking about running power to my HEI directly from the battery with a toggle switch and a 20amp fuse. I know I know not the way to do it. My line of thinking is that this would give me kind of a anti-theft device given that the toggle would be hidden. Go ahead, I live in Florida and i`m used to the heat.
Instructor
Joined: Dec 2008
Posts: 188
Likes: 18
From: SF Bay Area CA
I ran power from starter soleniod to a relay, then to HEI. Pull power from a ignition source to operate relay, put toggle switch in ignition source. Do not have to operate toggle everytime that you want to start car. Only when you want to use as theft deterent.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
What you are describing is a well used approach (back before alarm systems were available). Just connect one wire to the end of the harness wire and the other to the coil. You do not want to run a new power wire from under the dash, as the one in the harness is a calibrated resistance wire that needs to stay in the electrical system.
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
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