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The purpose of an ignition ballast resistor between the ignition switch 12v and the ignition coil positive terminal is to restrict current flow through the ignition coil.
Hei distributor wiring diagram ballast resistor. How the ballast resistor works. If a resistance wire is present. The way i do it. Chevy hei distributor wiring diagram chevrolet hei distributor wiring diagram chevy hei distributor plug wiring diagram chevy hei distributor wiring diagram every electric structure consists of various unique pieces.
The relay would be energized by the blue wire on the ballast resistor and one side of the relay would go to the alternator output stud through a fuse. I would power the new hei system through a relay. If not the arrangement will not function as it ought to be. Get a standard chrysler electronic ignition distributor wrecking yard auto show etc.
When using hei the distributor requires a 12 volt feed. Points style distributors do use 12. Each part should be set and connected with different parts in specific manner. In order to achieve this the ballast resistor or the resistance wire must be removed from the circuit and replaced with a pure 12 gauge feed wire.
If converting from a point type ignition remove any resistance wire or ballast resistor that may have been previously used. How to wire the ignition on a classic or old car with. Gm hei electronic distributor how to wire and run install. That s a fine tutorial on how to install a mopar electronic ignition box but a gm hei module creates a hotter spark and doesn t use a ballast resistor.
This feed wire must be 12 gauge from the ignition switch to the bulkhead and then from the bulkhead to the hei power terminal. Figure 1 unilite wiring diagram using ballast resistor note. Connect the flame thrower wire harness and vehicle wiring harness into the distributor cap. Failure to use an ignition ballast resistor will eventually destroy the ignition module.
Replace the wire with a 12 gauge copper stranded wire.