Using this start relay is quite easy. First, make sure your fridge is unplugged for safety. Then, locate the compressor where the relay needs to be installed. Connect the four 6.4mm spade terminals and the two connections to the compressor as shown. It should take only seconds to install. When using the fridge, if you notice any strange noises or the fridge not starting properly, check the relay to see if it's working. For maintenance, keep the relay clean and free from dust. Don't expose it to excessive moisture. If it gets damaged, replace it with a new one right away. With proper use and maintenance, this relay will serve your fridge well for a long time.