Mopar electronic ignition wiring schematic question
the dual resistor has 2 resistor values (5 ohm feeds ECU, and .5-1.5 ohm to feed the coil) , but they are not polarized, hook em in any direction you want. Here is an old quote, take it or leave it:
"...Ok... let's clear up
dual ballast provides two sources by two diff resistances. One is 5 ohms ( secondary ) which feeds the stock 5 pins ECU, and the other one is anything between 1.5 or .5 ohms ( Primary ) which feeds the coil.
single ballast just provides power for the coil. Resistance varies depending on which one and application, between 1.5 and .25 ohms
on 5 pins ECU, the 5th pin takes ONE POWER SOURCE from the secondary ballast resistor on dual piece.
on 4 pins ECU, the secondary resistor is not anymore outside, was moved to INSIDE the ECU... that's why the pin is gone
you can fit a 4 pins ECU on an stock 5 pins system without problem, simply the secondary resistance power will be going to, ANYWHERE... the pin is not there
you should NOT use the 5 pins ECU, on a system set to 4 pins. Probably your car will start up and ride around, what doesn't mean will work properly..."
confirmed...
the dual resistor has 2 resistor values (5 ohm feeds ECU, and .5-1.5 ohm to feed the coil) , but they are not polarized, hook em in any direction you want. Here is an old quote, take it or leave it:
"...Ok... let's clear up
dual ballast provides two sources by two diff resistances. One is 5 ohms ( secondary ) which feeds the stock 5 pins ECU, and the other one is anything between 1.5 or .5 ohms ( Primary ) which feeds the coil.
single ballast just provides power for the coil. Resistance varies depending on which one and application, between 1.5 and .25 ohms
on 5 pins ECU, the 5th pin takes ONE POWER SOURCE from the secondary ballast resistor on dual piece.
on 4 pins ECU, the secondary resistor is not anymore outside, was moved to INSIDE the ECU... that's why the pin is gone
you can fit a 4 pins ECU on an stock 5 pins system without problem, simply the secondary resistance power will be going to, ANYWHERE... the pin is not there
you should NOT use the 5 pins ECU, on a system set to 4 pins. Probably your car will start up and ride around, what doesn't mean will work properly..."
confirmed...
