This is a rare genuine Daihatsu accessory part. It was sold for over 20,000 yen at the time. The cables are generally in good condition, but as the engine compartment is a harsh environment, there is some damage as shown in the photos. Although individual experiences may vary, grounding can be expected to provide various benefits such as increased torque and improved audio quality. There is also a sense of security in being a genuine part. Please refer to the images for installation. I am not familiar with electrical tuning, so please refrain from asking questions about installation methods. Purchase is on a first-come, first-served basis.