2008 civic ex coupe manual

A rat chewed through the wires that go to the spark plugs.

Do you have to replace the harness or can you replace the 3 wires going to the spark plugs?

if it's in an accessible location and you believe you can replace that section of wire yourself with a solid connection go for it. it's coil on plug so most of the juice is built in the coil anyway. I would still make sure you use the appropriate gauge wire. solder or unions would probably work fine for that.

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