University of South Florida (46,612 students) â Coming in as the 9th largest university in the U.S., the University of South Florida, located in Tampa, is a public institution founded in 1956. It is the second university in Florida to make the top ten list in terms of student enrollment.
Re: LED's glow when off most likely it is circuit leakage of the light itself. A fraction of a milliamp can cause an LED to glow but not put out useable light and the amount of energy used over a year is probably just a few pennies so I wouldn't put a lot of effort in trying to fix it if that is the issue.
30 and 87 create the switch to your LED lights. By default this switch is open, so current cannot get from the battery to your lights. 30 - is your power source for your LED lightbar. It connects to the positive (+) side of your battery or to a switched power source that only gets power when your ignition is on.87 - goes to the positive side of your LED lights.ithout this current, no magnetic force is created, so the 30 to 87 switch stays open, and your lights stay off. 85 - connect to the power source that you want controlling the switch. For example you could splice a wire off your high beam wire or off your backup light wire. 86 - connect to a ground.