Installed Msd6a and have run on

aussiewannabee69 · Feb 10, 2017

I have reinstalled my msd box after removing it. I also removed the MSD start and step aswell. (Previous owner was a racer)
I have wired it as per the diagrams i foind on the net.
I think it has to do with the red wire that goes to the igntion. I put it in the old coils terminal and it will crank but wont run. I have removed that wire, put it straight to battery power and it runs but obviously wont shut off.
What am i doing wrong?
I have a 1 wire alternator, the regulator was mounted on the firewall but was not used. I also have a pro billet msd distributor.
Any help would be great as im away for 5 weeks in a few days and its gonna kill me if i cant get it started before then!

493 Mike · Feb 10, 2017

I think you need a relay or a Ford type starter solenoid to isolate the alternator output from the battery. That will stop the current flow to the ignition box.
Mike

Yatzee · Feb 10, 2017

aussiewannabee69 said:
I have reinstalled my msd box after removing it. I also removed the MSD start and step aswell. (Previous owner was a racer)
I have wired it as per the diagrams i foind on the net.
I think it has to do with the red wire that goes to the igntion. I put it in the old coils terminal and it will crank but wont run. I have removed that wire, put it straight to battery power and it runs but obviously wont shut off.
What am i doing wrong?
I have a 1 wire alternator, the regulator was mounted on the firewall but was not used. I also have a pro billet msd distributor.
Any help would be great as im away for 5 weeks in a few days and its gonna kill me if i cant get it started before then!

View attachment 394833

You have obviously installed it wrong or there is something that has changed since it was last in use. To simplify a review of the boxes wiring status I recommend you view this video:

https://www.cartechbooks.com/techtips/ignitioninstall/

In the event that you cannot resolve the issue, you should really give MSD tech a call.

furyus · Feb 10, 2017

There are two wires coming from the ignition should be brown and blue. The would normally go to the ballast resister.one is start, one is run. Connect both to the MSD wire. Don't use the ballast resistor.

Jeremiah · Feb 10, 2017

YOu have to tie the little red wire to "start" and "run" as described above. The ballast resistor will be bypassed.

aussiewannabee69 · Feb 10, 2017

furyus said:
There are two wires coming from the ignition should be brown and blue. The would normally go to the ballast resister.one is start, one is run. Connect both to the MSD wire. Don't use the ballast resistor.

Awesome thanks!
I had a read of the schematic before and i thoight it may have something to do with that blue wire.

bigmanjbmopar · Feb 15, 2017

Did you bypass the ballast resistor? with a 1 wire alt u will need to do this. also your not using the original regulator right? it goes away with the resistor

aussiewannabee69 · Feb 15, 2017

bigmanjbmopar said:
Did you bypass the ballast resistor? with a 1 wire alt u will need to do this. also your not using the original regulator right? it goes away with the resistor

yes once i connected the ballast resistor wires together it started and ran.
Thanks

Installed Msd6a and have run on

aussiewannabee69

Well-Known Member

493 Mike

FBBO Gold Member

Yatzee

Well-Known Member

furyus

Well-Known Member

Jeremiah

Well-Known Member

aussiewannabee69

Well-Known Member

bigmanjbmopar

Newb with a view

aussiewannabee69

Well-Known Member

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