What is the blue wire for on LED lights?
Brown is your hot wire so you want to connect that to your building’s black wire. The blue is negative or return, so that will go to white.
What to do if a ground wire comes off your light fixture?
But realistically speaking, the ground wire shouldn’t come detached from your light fixture accidentally. I’ve suspended fixtures from the ground wire while I wired up the rest of the wires, which meant I used the ground wire to hold the whole weight of the fixture while I was getting my supplies together.
What to do if your light fixture won’t turn off?
To check, disconnect all the wires from each other, turn on the breaker and use a voltage tester to identify the live circuit wire. Other wires connected to it are probably supplying power to outlets and the light fixture wire may be mixed in. To check, touch each wire in turn to the circuit wire, wearing rubber gloves for safety.
Why does my Romex light fixture not ground the wire?
Assuming the electrical box is metal, take a look at the box. Frequently the metal box itself is grounded. If the Romex wire coming into the box appears to have a metalized surface, that surface probably serves as a ground. I’ve also seen boxes where the ground wire is looped back so it’s touching the box but not actually present in the box.
Why does my light keep coming on when I Turn Off the breaker?
The most likely error is that the wire going to the light that stays on is contacting one of the live wires. To check, disconnect all the wires from each other, turn on the breaker and use a voltage tester to identify the live circuit wire.
What should I do if my outlet light is not grounded?
If the tester lights up, the box is grounded. If you get no light, then there is no ground and this method won’t work for you. Skip down to Option #2 below. If the tester lit up, then all you need to do is run a bare copper wire from the ground screw on the outlet and attach it to the metal box.
Why is my blue wire showing no voltage?
If it is hardwired to the truck, the ground needs to be connected to the negative battery terminal. Sever the blue wire a few inches back from the controller and use your circuit tester to test the wire. If it shows voltage without applying the manual override, then this indicates a problem inside the controller and it will need to be replaced.
Why does my light fixture not turn off?
Light fixture just 2 wires, The box had 2 white, 2 black and 1 red and a ground. Put the red and blacks together and the whites together now although the lights will light when the bulbs screwed in but the switch won’t turn them off. Having the same problem.
Why does my brake controller show a blue light?
Since your brake controller shows no red light this indicates a short to the brake line (blue wire). If you are using wiring harness, # 3040-P, make sure that extra white ground wire is attached to a clean bare metal surface. If it is hardwired to the truck, the ground needs to be connected to the negative battery terminal.