Safe and simple installation is what you can expect from Juno one-circuit and two-circuit track systems. All are engineered and manufactured using the latest technology, assuring the highest possible quality. Mechanical polarity is standard on all Juno Trac-Master components, thus simplifying installation and assuring correct electrical connection. Each track section has a debossed polarity line that indicates the positive conductor side. Both the connectors and the track fixtures have indicator arrows designed to point to the track polarity line when installed properly. The system is virtually foolproof.