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Spud Miller's Cave
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Shift light for dumies
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Topic: Shift light for dumies (Read 3160 times)
retroboy
Full Member
Posts: 221
Your Track: Whyalla
Your Vehicle: FED
Shift light for dumies
«
on:
August 07, 2017, 03:31:02 AM »
Howdy
Will one of those adjustable 12 volt led shift lights pick up a pulse from the earth terminal of an old internal coil Vertex mag.
Cheers
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Supercat
Sr. Member
Posts: 252
Your Best Time: 6.16 @ 218 1/4
Your Track: Bakersfield to Bowling Green to New England dragway
Your Vehicle: Buick powered/ 200" Fastech FED
Re: Shift light for dumies
«
Reply #1 on:
August 07, 2017, 07:24:03 AM »
We use a signal convertor to run a Sun tach and shift lite.
Works great
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Spud Miller
Global Moderator
Sr. Member
Posts: 332
Re: Shift light for dumies
«
Reply #2 on:
August 07, 2017, 10:09:59 AM »
Tachs always want a positive DC pulse and mag is an AC animal. The Autometer 9118 or MSD 8132 will convert the AC signal to DC for your tach or shiftlight device. Unfortunately, those devices (they are same thing with a different label) work about half the time for people. They hate RFI and tachs and shift-lights freak out sometimes using those.
If ignition noise gives you problems, you could try getting a Vertex cap opened up for low impedance suppression wires, or try our device. Ours is a bunch more expensive to make but usually works where other devices have failed. Your mileage may vary!
Vertex cap with larger holes:
https://fuelinjectionent.myshopify.com/collections/caps-rotors/products/vertex-8-cyl-cap-opened-for-suppression-wire
Set of suppression wires for a Vertex:
https://fuelinjectionent.myshopify.com/collections/plug-wires/products/solid-core-90-degree-for-vertex-black-or-red
Our tach device:
https://fuelinjectionent.myshopify.com/collections/rpm-timing-related/products/tach-pulse-generator
Spud
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Fuel Injection Enterprises, LLC
Mechanical Injection
Magnetos
EFI Conversions
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