The high-voltage wire carries the pulse from the ignition coil to the spark plug. The length of this wire is 1 m, the color is orange.
Replace it if the insulation is cracked or worn, if you hear crackling or see arcing, and the spark is weak. The wire is usually fitted together with a new cap, and the length is trimmed to fit. Choose the part by the name and dimensions on the product page and compare it with the original.
