Ignition System - DURA-Spark II: Testing: Notes

NOTE: All wire colors shown refer to colors of electronic control module wires. When making tests, wires may need to be traced back to control module for proper color identification.

When performing underhood services, do not remove the following spark plug wires while the engine is running or cranking:

Plug No. 1 or 8 on V8 engines.
Plug No. 3 or 5 on 6 cylinder engines.
Plug No. 1 or 3 on 4 cylinder engines.