Using this ARCO Marine Mercruiser Solenoid is easy. First, make sure your boat's power is turned off. Remove the old solenoid and connect the new one in the same way, paying attention to the 12 - volt connection. When it comes to maintenance, check the connections regularly to ensure they are tight and free of corrosion. If you notice any signs of wear or damage, it's a good idea to replace the solenoid promptly. Remember, this product can't be returned to the place you bought it from. So, if you have any problems or concerns, reach out to the manufacturer right away. With ARCO's 12 - month part and labor warranty, you can use it with confidence.