GMC Workshop Service and Repair Manuals

Spark Plug Wire: Specifications

RESISTANCE VALUES

0-15 inch cable .....................................................................................................................................................................................  3,000 - 10,000 ohms.

15-25 inch cable ...................................................................................................................................................................................  4,000 - 15,000 ohms.

25-35 inch cable ...................................................................................................................................................................................  6,000 - 20,000 ohms.

NOTE:  Longer wires should measure about 5,000 to 10,000 ohms per foot.