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GT40 Tech - Fueling, Electrics, & Engine Cooling Petrol, Electrons, & Water

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Old 13th March 2018, 03:01 AM   #1
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347Stroker
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Dizzy wiring

Hey guys, just seeing if anyone knows if I need to use all four wires on my dizzy. The new ecu loom only has 2 x wires going to it a green and a purple. The old dizzy (scorcher) has 4 wires. An earth,power, sun and ref. Is it a matter of just using the power and negative or does it need the actual sun and ref as well even though the computer doesnít use it?(does the actual dizzy require these to work?)

Thanks guys

M
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Old 13th March 2018, 10:00 AM   #2
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Re: Dizzy wiring

Post the make and model of your distributor. It sounds like an amplified hall effect. There should be at least one signal and one ground that need to be connected from those 4. The green and purple in your harness sounds reminiscent of the MSD unamplified pickup of their own distributor...
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Old 16th March 2018, 05:43 AM   #3
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Re: Dizzy wiring

Hey mate, all I know is itís a scorcher distributor with 4 wires coming from it. The wiring diagram for the old motel system says itís :

A. Earth (black)
B. Ref (green)
C. Sync (blue)
D. Power (red)

I would like to just use the same distributor for the new system Iím running (speedmaster self learning ecu) but the new system only has the purple and green wires which from what I can gather is the mag pickup wires.
So is it just a matter of connecting the wires to 2 of the existing ones and if so which ones?

Thanks a bunch
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Old 16th March 2018, 09:16 AM   #4
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Re: Dizzy wiring

It looks to me like you need to connect all 4 in order for the distributor to work correctly.
The power line would need a connection to the ignition switch, earth to a local ground on the engine, then the remaining two wires woukd connect to your ECU.
Others may also chime in on this..
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Old 17th March 2018, 02:07 AM   #5
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Re: Dizzy wiring

I was thinking along the same line mate, but I better ring the place up on Monday morning just to be safe haha.
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