Haltech E6S - Manual (Page 100)

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The Home trigger is wired to the same input as the Road Speed. This means that the Road
Speed input, and consequently the Torque Converter Output, cannot be used with Direct Fire.
B.2.3 Coil Setup
To give an example of how to match up the coils to the ignition outputs, we will use an
example of a V8 with an arbitrary firing order of : 1, 2, 7, 8, 4, 5, 6, 3. The companion
cylinders are the corresponding cylinders in each half. Therefore the companion pairs and
their coil numbers would be : Coil One, cylinders 1 and 4; Coil Two, cylinders 2 and 5; Coil
Three, 7 and 6; Coil Four, 8 and 3. The coil numbers then match up with the ignition Channel
numbers. The diagram below shows how the coils would connect up.
Figure B1. Coil layout for V8 with firing order 1, 2, 7, 8, 4, 5, 6, 3.
It is not necessary for coil one to connect to cylinder one. If, for instance, the original Home
trigger occurs before cylinder 6 (not common, but possible) then coil one would need to
connect to cylinder 6. The coil order would still be the same.
B.2.4 Converting Individual Coils to Waste Spark
One way of overcoming the problem of individual coils on 6 and 8 cylinder engine (and 4
cylinders if required) is to pair the cylinders up in the same way, but run 2 igniters (one for
each plug) to one ignition output. For example, on a six cylinder six igniters would be
required but only 3 ignition outputs, which is within the scope of the E6S.
B.2.5 Ignition Outputs
The E6S will always use it outputs in the same order. It will use up to 4 outputs, and what
outputs it does not use are available for other purposes. The output order is :