As a nal point to this section it must be noted that the colour codes and
terminal designations given, are for illustration only. Further reference should
always be made for specic details to manufacturer’s information.
3.2.3 Harness design
The vehicle wiring harness has developed over the years from a loom
containing just a few wires, to the looms used at present on top range vehicles
Table 3.5Terminal designation numbers (DIN 72 552)
1Ignition coil negative
4Ignition coil high ...
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