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05-06-2018, 12:23 PM | #18 | |
Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,715
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Re: 70 C20 w/HEI Starter Stays Engaged, Ignition Switch Smoked
Quote:
Yes the HEI requires a full 12 volts all the time, eliminating the need for the resistance wire and the bypass yellow wire, and in fact removing them from the firewall block, and replacing the resistance wire in the bloc with a regular 12 gauge wire to the distributor, is a common way to feed the HEI distributor Here is a visual of the resistance wire and the yellow bypass wire. The resistance wire is the white orange purple wire on the right edge of the diagram. Follow it up to the starter solenoid and it connects with the yellow wire at the starter solenoid, and then the yellow wire runs over to the coil positive. Here it is in the firewall block and the colors have long since faded. It is the whitish cloth covered wire. The routing of the green wire is probably something the factory did to facilitate the installation during the build. The green wire is just a path to ground for the temperature sending unit so length is not a factor. I though the trouble shooting method might be helpful to you and to all the other members of our truck forum. VV
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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hei, ignition switch, starter wiring |
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