It is Grey with an orange stripe, or Dark green depending on which harness is used. You can find it at the EDIS module which is just below the air box on the passenger side (will be in a 12 pin plug). You could also go straight to the coil, but this will make things a little neater looking under the hood.. (instead of having a wire tapped into the coil right on top of everything). Which ever of these colors you find at the EDIS plug, use it and you will be fine..
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