Review on 🚗 4Pcs COONLINE 12V 30A Car Truck Marine Toggle Rocker Switch with LED Light - Waterproof Blue Green Yellow Red On-Off Control for Auto Motorcycle Boat by John Ford

Although the part number says it is SPST, it is actually SPDT with one of the outputs permanently connected to ground (GND) as shown in the picture. If you want one of the switches to power the second switch (by connecting the first switch's load to the second switch's power supply) AND want the LED to work on the second switch, then close the main switches. a power source that may cause a fire depending on the power source. However, if you leave the ground unconnected in the second switch, the secondary switch will work WITHOUT the LED on the second switch working. Why pay for an LED when you can't use it in some cases?