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docs: update wiring/Ignition_wiring
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title: Ignition Wiring
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description:
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published: true
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date: 2020-01-15T09:31:11.804Z
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date: 2020-01-16T11:21:51.013Z
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tags: ignition, wiring
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---
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@ -24,14 +24,14 @@ When using wasted spark, it is critical the correct pairs coils and/or spark plu
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There are many dual pole, wasted spark coil packs available both with and without built in igniters. Either are suitable for use with Speeduino, but use of coils with built-in igniters is recommended
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![ign_4Cyl_COP_wasted-spark.png](/img/wiring/ign_4Cyl_COP_wasted-spark.png =500x){.align-center}
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![ign_4Cyl_COP_wasted-spark.png](/img/wiring/ign_4Cyl_COP_wasted-spark.png){.align-center width=500}
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> Note: The above example uses 'smart' coils with built in igniters. Do NOT attach high current (dumb) coils without adding an igniter
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{.is-warning}
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### Coil on Plug
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As an alternative to a dual pole wasted spark coil, individual coil on plug units can be used in a wasted spark configuration.
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![ign_4Cyl_COP_wasted-spark.png](/img/wiring/ign_4Cyl_COP_wasted-COP.png =500x){.align-center}
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![ign_4Cyl_COP_wasted-spark.png](/img/wiring/ign_4Cyl_COP_wasted-COP.png){.align-center width=500}
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> Note: The above examples use 'smart' coils with built in igniters. Do NOT attach dumb COPs (2 pins) without adding an igniter
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@ -42,11 +42,11 @@ As an alternative to a dual pole wasted spark coil, individual coil on plug unit
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Sequential ignition control using Coil-on=Plugs coils dramtically simplifies the ignition wiring. With this configuration, each coil (and subsequently each cylinder) connects to a single ignition outpt, wired in the firing order.
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![ign_4Cyl_COP_seq.png](/img/wiring/ign_4Cyl_COP_seq.png =500x){.align-center}
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![ign_4Cyl_COP_seq.png](/img/wiring/ign_4Cyl_COP_seq.png){.align-center width=500}
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> Note: The above example uses 'smart' coils with built in igniters. Do NOT attach dumb COPs (2 pins) without adding an igniter
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{.is-warning}
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## Distributor
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If a distributor remains in use, only a single output is required from the ECU. This should be fed into a single channel ignition module (Such as the common Bosch 124) which can then drive the coil.
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![ign_Basic-distributor.png](/img/wiring/ign_Basic-distributor.png =500x){.align-center}
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![ign_Basic-distributor.png](/img/wiring/ign_Basic-distributor.png){.align-center width=500}
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