4. Disconnect the leads to the ignition coils,
then remove the coil mounting nuts and the
coils (Figure 18).
5. Install by reversing these steps. Note the
a. The green wire goes to the left coil and the
black wire goes to the right coil. The
yellow/red wires go to either the negative
or the positive
Since the spark fires through one spark
plug to ground, and back up through the
other spark plug, ignition coil polarity
has no effect on performance.
b. U.S. models: Make sure that none of the
air induction system hoses or clamps
contact the coil wires or terminals.
1. If the coil condition is doubtful. there are
several checks which can be made. Disconnect
the coil wires before testing. Measure coil
primary resistance, using an ohmmeter set at
The resistance should be about 4 ohms on
contact point models and about 1 1/2 ohms on
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