The ECU is fitted with two amplified ignition outputs. This allows the following types of ignition;
OMEM200 Installation Manual 2v10
12
yellow
violet
12V from
power relay
Both ignition outputs from the ECU go onto the coil negative terminal. The distributor can be left as
standard but all that is now used are the rotor arm and cap; the advance mechanisms, points etc are
redundant.
These are typically a single pack containing two double-ended coils with 4 HT leads coming directly
from it.
Some engines have wasted spark coil packs that look like 4 individual coils, but are still two double
ended coils and so can still be controlled directly by the ECU. Examples are some Rover K Series and
some small Peugeot engines;
Single Coil and Distributor
Wasted Spark Coil Pack
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