Hot rodding the HEI distributor
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===Electrical connections=== | ===Electrical connections=== | ||
| + | [[File:Hei coil cover wire diagram.jpg|thumb|350px|left|HEI coil cover]] | ||
| + | The HEI ignition requires a switched 12V DC power supply (without any resistance from a ballast resistor or a resistor wire like was used on many GM points-type ignition systems), and a ground. The coil cover has the wiring positions marked on it: | ||
| + | *Left is the tach terminal | ||
| + | *Center is the ground | ||
| + | *Right is the 12V switched power source | ||
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If converting to an HEI from a points-type distributor, often the wire that was used to supply current to the point-type coil will have a ballast resistor in line, or the wire itself will be a resistor wire. This is not needed or wanted for the HEI- it needs to be supplied with full system voltage at all times for best performance. Depending on the application this could mean rewiring or replacing the resistor wire for a 12-14 gauge supply wire. | If converting to an HEI from a points-type distributor, often the wire that was used to supply current to the point-type coil will have a ballast resistor in line, or the wire itself will be a resistor wire. This is not needed or wanted for the HEI- it needs to be supplied with full system voltage at all times for best performance. Depending on the application this could mean rewiring or replacing the resistor wire for a 12-14 gauge supply wire. | ||
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