Hello all, I have a 73 Duster 318 and I'm looking at replacing the mopar ignition with an E-coil and a 4 point ECU. My question is: If I delete all the old equipment, how do I wire the Ignition 1 and 2 to the coil. I understand most of the wiring, except the mopar "voltage regulator", can I delete this??? IF so, how?? I also have a relay, but I did not really know if I needed it or not.View attachment Mopar_Electronic_Ignition_diagram.jpg
HEI wiring question
- Thread starter 7Du$ter3
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67Dart273
Well-Known Member
You cannot delete the regulator unless you are converting to a "one wire" or other internally regulated alternator. The blue wire in the diagram is "switched 12V" that is, run in "ignition." It must be fed to coil positive, to the HEI power terminal, and remain connected to the regulator.
The brown wire coming out of the firewall is the coil bypass circuit and also must be jumpered to coil +
The brown wire coming out of the firewall is the coil bypass circuit and also must be jumpered to coil +
67Dart273
Well-Known Member
I don't run a ballast and also just run a Mopar factory coil. There are much better coils, in general modern "E" coils are better. This refers to the shape of the transformer core. The old ones were "solenoid" wound which is why they were all "long and skinny"
pishta
I know I'm right....
crane PS-92, good coil, designed for CD systems but can be tickled with any input.
moparmat2000
Well-Known Member
Not sure if this helps but pertronix makes an ignitor lll coil. # 44011 it has a .32 ohm primary winding, and a 45,000 volt output. The HEI E coils usually run between .3 to .5 ohms on the primary side.
The old oil filled coils were 1.5 to 2.0 ohms on the primary side, dont forget on a chrysler or ford electronic system with either mopar electronic or fomoco duraspark were still 6 volt switched either thru a ballast resistor, or a resistor wire. A full 12 volts thru one of these coils will over heat it and cause it to fail in short order as it was never designed to handle 12 volts.
The pertronix ignitor lll has the right resistance on the primary winding side, a 45,000 volt output and is designed for 12 volts. It also looks like a stock oil filled coil. When you heat and peel the pertronix sticker off of it nobody will ever know the difference LOL
Tho you cant beat the price of a used E coil off a junked chevy truck if you dont care about its blocky appearance. I can get these all day long at my local boneyard for about $10 with the plug and a short length of wire attached.
Matt
The old oil filled coils were 1.5 to 2.0 ohms on the primary side, dont forget on a chrysler or ford electronic system with either mopar electronic or fomoco duraspark were still 6 volt switched either thru a ballast resistor, or a resistor wire. A full 12 volts thru one of these coils will over heat it and cause it to fail in short order as it was never designed to handle 12 volts.
The pertronix ignitor lll has the right resistance on the primary winding side, a 45,000 volt output and is designed for 12 volts. It also looks like a stock oil filled coil. When you heat and peel the pertronix sticker off of it nobody will ever know the difference LOL
Tho you cant beat the price of a used E coil off a junked chevy truck if you dont care about its blocky appearance. I can get these all day long at my local boneyard for about $10 with the plug and a short length of wire attached.
Matt
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