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I have a Mallory unilite dizzy that came with my 460 that I have swapped into my 77 crewcab. My question is how is this thing wired up? From what I have gathered it has this 3 wire hookup red brown and green. Red going to the ballist resistor then to the + on the coil ( a promaster mallory coil) then the brown beeing a ground, and last a green going to the - on the coil. So I see all these hookups but what about my duraspark box wiring ? Is it deleted and a hot wire coming off one of the wires from the ignition switch that go to the dura box now going to the ballist resistor instead. I don't do aftermarket ignitions so I'm not sure if this is some kind of stand alone setup or has to be incorperated into the current duraspark wiring. Any input from someone who has done the swap or knows whats going on here is greatly appretiated.
The red wire does the the coil + as well as the hot wire from the ignition with at least 1 ballast resistor. You want no more than 10V at the coil + when it is running.
The brown wire goes to the coil -.
The green wire goes to a good ground. I usually use the intake manifold if possible.
The duraspark box is not used. You will need to fine the run wire (one of the two red wires going to the box), if it doesn't have any voltage in the start position, then you will need to run both wires thru the resistor.
Are you sure on the Green and brown? The diagram in figure 1 shows the green going to the - on the coil and the brown ground. Here is the info page I pulled up. http://static.summitracing.com/globa...nilitedist.pdf
Thanks for the info, I'll be happy to get rid of some of the clutter in that engine bay.I'll be adding a couple pics to my 77 gallery of the coil mounting and some 460 shots if you'd like to check em out.
OOPs, brain fart, Yes the green is the coil- and the brown is the engine ground.
I used to sell these years ago when SuperShops was still in business.
A good ground is a must as is the 10V max. These are very accurate dizzy's and as long as you have the above recommendations done, they will last a very long time.
I have used several of them in Fords, 1 388 stoker Chevy and a 440 6-Pack Roadrunner. I never had one fail. I used a 29440 coil with them. The Chevy also had a Hyfire box as well.