My 2004 Disco started throwing P0301 and P0300 codes suddenly last week. I had replaced the plugs and upgraded the wires to 8mm a while back, after digging into it, I found the cylinder 1 wire popped out of the guide and was resting on something hot, which eventually melted the jacket enough to cause a short.

The others are all still good and I can only find them for sale in sets. Does anyone know where to get a single cylinder 1 length ignition wire?

 

I know NAPA sells single plug wires