New Product Information: A new proposal for those seeking improved performance and fuel efficiency through earth tuning. Conventional grounding often involves connecting the negative terminal of the battery to an earth point. However, consider this: what happens if you disconnect the battery while the engine is running? Those with some knowledge will know immediately. That's right, the engine doesn't stop. This is because after the engine starts, most of the car's electrical components are powered by electricity generated by the alternator. The alternator's ground is the engine itself. You should understand what I'm getting at by now. Many of the vehicle's electrical components are grounded to the body and return to the battery's negative terminal and the engine through the vehicle's metal parts. The battery's negative terminal is connected to the body. It can be said that connecting to the engine itself more effectively is more effective than gathering the ground to the battery's negative terminal. DIY-LIFE's new earth tune proposes to ground effectively by connecting the body and the engine. Product Description: Product Details: Includes a 22sq equivalent extremely thick braided wire with 6mm diameter terminals. Includes two copper washers for contact points. *While the genuine earth reinforcement cable sold by DIY-LIFE (intended to connect to the battery's negative terminal) has heat-resistant sheathing, this product does not have sheathing and is intended to connect the engine and body, so it uses a flat braided wire that excels in heat dissipation. *Special processing makes the wire less likely to bend and easier to install. *Uses high-quality flat braided copper wire (plated surface treatment) from a Japanese manufacturer.