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MSD 6AL on Charger 440 engine

Started by shone190, November 16, 2014, 12:15:06 PM

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shone190

Hi guys,

   I was wondering if I buy MSD ignition 6AL and distributor 8546 and connect as they (MSD) suggest, do I need to left Ignition Module and ballast resistor or not?

As I see on MSD connection diagram, I need to connect 6AL on distributor and ignition coil, so what to do with current wires from Ignition module to distributor and ignition coil? I need to leave them or not? What about ballast resistor?




Thanks in advance.
Dodge Charger 440 1973, Audi URquattro 4.2l V8

Ghoste

When I had my 6AL installed I bypassed the ballast.  Also, you won't need the old ignition module as the 6AL is the ignition module now.

shone190

Thanks, so I can remove Ignition Module and resistor, great info :)
Dodge Charger 440 1973, Audi URquattro 4.2l V8

John_Kunkel

You must hook the IGN1 and IGN2 wires that were on the ballast together and use them for the power source for the small red wire on the 6AL.
Pardon me but my karma just ran over your dogma.

shone190

Yes, I know that, this is "from ignition key" wire on MSD diagram.

Thanks.
Dodge Charger 440 1973, Audi URquattro 4.2l V8

RDC

Quote from: John_Kunkel on November 16, 2014, 04:34:16 PM
You must hook the IGN1 and IGN2 wires that were on the ballast together and use them for the power source for the small red wire on the 6AL.
That's good to know. I'm about to install a MSD and you have to tie both ballast wires together for the small red wire, but the rest of the old wiring can be removed right?

shone190

As I understood, we only need pink wire (from ignition key) to be connected to small red MSD wire.
Dodge Charger 440 1973, Audi URquattro 4.2l V8

RDC

Just before I start cutting and splicing wires, I splice together the brown and blue wires from the ballast together with the small red wire from the MSD, the other wires that plug into the ballast are not used and can be removed?

John_Kunkel

Quote from: shone190 on November 17, 2014, 04:29:25 PM
As I understood, we only need pink wire (from ignition key) to be connected to small red MSD wire.

The pink wire in your original post is only half of the ignitions system, both the pink and orange wire must be tied together to power the small red MSD wire.

The reason is, pink (originally brown) is only powered in START, it's shut off in RUN and only the orange wire (originally blue) is powered in RUN.


Quote from: RDC on November 26, 2014, 03:04:07 PM
Just before I start cutting and splicing wires, I splice together the brown and blue wires from the ballast together with the small red wire from the MSD, the other wires that plug into the ballast are not used and can be removed?

ALL of the wires from both sides of the ballast need to be tied together to power the small red MSD wire.
Pardon me but my karma just ran over your dogma.

shone190

Thanks for the answer, but why do I need to connect blue wire which goes from ballast to PIN 3 on ECU box?!?!
Dodge Charger 440 1973, Audi URquattro 4.2l V8

John_Kunkel

Your dual-ballast schematic is confusing because the colors aren't the same as factory, the blue wire in your schematic is unnecessary for the MSD.

My answer to RDC assumes he has the factory colors and a single ballast.
Pardon me but my karma just ran over your dogma.

RDC

I have a dual ballast, but the factory coloured wires are still in place.

John_Kunkel


With a dual ballast the wire on pin 3 is unneeded.
Pardon me but my karma just ran over your dogma.

shone190

So, with dual ballast I need to connect red and pink wire (Ignition run and start) and both of them connect to small red wire on MSD?
Dodge Charger 440 1973, Audi URquattro 4.2l V8

John_Kunkel

Pardon me but my karma just ran over your dogma.