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MG Midget and Sprite Technical - '76 Midget, 45DM DIzzy, and Pertronix
|Here goes...I have a 45DM (CEI) dizzy that I am modding with a pertronix ignition. |
The wiring harness includes the ballast wires, coil is standard for use with ballast etc.
I want to make sure that I am gonna wire this thing up correctly without ruining the coil and ignition module.
Is the following acurate?
I hook the black and white/blk stripe wires to negative post of coil.
Hook the white/lt green stripe wires to positive.
Now, can I use the white elbowed wire (that would normally go to the distributor resistor) to mate to the red pertronix wire as a 12v switched feed?
|That's right. But. You may have an odd way of having to start the car. It may only fire when you release the key from cranking, not during.|
The white circuit is interupted in the cranking position and the solenoid provides a direct 12v feed to the coil through the white/green wires to aid starting. With your electronic ignition module thing, they usually need a +12v all the time, which it won't get during cranking if you simply put a white feed to it...
What you need to do isn't complicated, if you can do some basic circuitry and the sort. How I rigged my 1500 up is to have a split feed to the red wire on the ignition module, both a 12v white and a white/green +12 cranking feed go to it, however to prevent the white feed going back through the join and down the white/green wires to give the coil a permanent 12v (cooking it) I put in a diode (one from my MGBs seatbelt warning system actually!) on the white/green circuit just before it joins the white circuit that joins the red wire so that it cannot backflow.
I hope that makes some sense! If you're still a bit confused, I can try putting a picture up of the physical wiring for you.
|I once used that elbowed white lead to power a non-ballast coil I used to have, and it worked fine. Eventually I went back to a ballasted coil and wired the PerTronix as per the instructions. So yes, you can use that white wire if you need to. |
|Thanks RW - I feel I am a bit inept as far as electricals are concerned and a picture is worth 1000 words to me.|
If you could post a picture I would greatly appreciate it.
Another question - I currently have a 1.2 OHM coil - should I go to 3 OHM ballasted coil?
This thread was discussed on 29/03/2011
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