When you first arrive at the Slums early in your catventure through Stray, you'll find that there are plenty of things to do--though you probably didn't expect that you'd need to round up some Super Spirit Detergent. Nevertheless, you're likely to stumble upon the merchant Azooz who has a few things for sale, including the Electric Cable, which you'll eventually need to complete the main objective of fixing the Broken Tracker. He'll trade the wire to you for the Super Spirit Detergent, so...