8n front mount electronic conversion

[old guy 63]

Desperately need wiring diagram for my 48 ford 8n that has been converted to 12 volt (one wire altetnator) with a petronix 1247 electronic ignition.

 

[soaked]

Desperately need wiring diagram for my 48 ford 8n that has been converted to 12 volt (one wire altetnator) with a petronix 1247 electronic ignition.

Hi old guy 63,
Welcome!
Here is a one wire 12 volt, that works for pertronix 1247.
What are you trying to sort out?
Do you need the pertronix instructions?

 

[old guy 63]

Thank you,Petronix instruction says wire goes to key side of ignition which I have it on,but I am not getting spark 12v coil is new along with plugs and recommended plug wires.

 

[soaked]

Thank you,Petronix instruction says wire goes to key side of ignition which I have it on,but I am not getting spark 12v coil is new along with plugs and recommended plug wires.

Check the volts at the battery posts. Shouldn't get a voltage reading below ~ 9.5 volts when the starter is engaged.
Some new coils pig tail coils are not good, and ground out like this

 

[old guy 63]

Thank you,Petronix instruction says wire goes to key side of ignition which I have it on,but I am not getting spark 12v coil is new along with plugs and recommended plug wires.

Check the volts at the battery posts. Shouldn't get a voltage reading below ~ 9.5 volts when the starter is engaged.
Some new coils pig tail coils are not good, and ground out like this

View attachment 152759

Thank you I will as I suspect this may be the problem. Also want to add that the only resistor I have is the block no white bar type does that matter ?

 

[soaked]

Front mount 12 volt coils can be ~2.5 ohms. Measure yours.
The factory resistor is all thats needed.

6 volt coils used on 12 volt conversions can be below 1.5 ohms, and need the white ceramic resistor also.