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Old 12-10-2013, 01:13 AM   #1
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Default Help with LS2 coils on a 97

I would like to install the LS2 truck coils in my 97 Miata with a 99 engine. When the turbo is complete, I am hoping for around 300 - 320HP.

My 97 wiring harness has TWO connectors into the existing OEM coil. One has YELLOW/BROWN, BLACK, BLACK/WHITE. The other BROWN, BLACK, BLACK/WHITE. Using Brain's thread I figured out the following:

Brown/Yellow -- Coil 4 & Coil 1 (TRIGGER)
Black/White -- Coil 1 & Coil 2 & Coil 3 & Coil 4 (12V SWITCHED)
Black -- Coil 1 & Coil 2 & Coil 3 & Coil 4 (GROUND)
Brown -- Coil 2 & Coil 4 (TRIGGER)

Looking at the diagram for LS2 coils, I can't figure out how to match the wires. I will be using a MS3X with a pigtail to plug into 97 OEM harness.

Any help is much appreciated.

PS. I am planning on buying the following coil connector harness
GM Ignition Coil Connector Truck D581 D585 LS2 Set of 4 | eBay
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Help with LS2 coils on a 97-97miatacoil.jpg   Help with LS2 coils on a 97-coil_wiring2.jpg   Help with LS2 coils on a 97-coilwiring.jpg   Help with LS2 coils on a 97-ls2coil.jpg  
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