Coil Questions (1 Viewer)

Joined
Jul 18, 2017
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Hey Everyone,

I have read over the threads on 40 series coils and I cant find the info I need. I am putting my 1975 40 back together after five years and the labels have all faded off my wiring. What I need to know is where to plug the white wire with blue stripe that has power only when the key is turned to start(starter engaged). I have been scratching noggin over this.
 

thebigredrocker

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Joined
Nov 5, 2013
Messages
3,524
I think the WL (white/ light blue stripe) goes to the B+ on your alternator. Maybe post up a pic of your harness.

Here is a pic of the 76 harness I have showing those connections.

Red to the distributor from the OEM igniter which you no longer have
Yellow/Black to oil pressure sending unit
Black/Yellow to starter from + side of coil (This is the ballast resistor bypass wire)
Black to - side of coil from OEM igniter

If you truck is running now how is the Pertronix wired? Draw a pic showing how the PO has it connected and post it up.
View attachment 678663

 

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