Motion Detector not working...help please

start with the bulbs. Then if your new bulb isnt working, test the socket with a known working bulb. If the unit isn’t working, then you’ll need to have it looked at or replaced.

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sometimes cleaning the lens will do the trick just use a damp cloth with a mild cleaner

first thing I’d do is take a bulb you know is a good working bulb and screw it into your fixture to see if it lights up? If it does replace the bulb! If it doesn’t the problem will need more investigation! If it has two lights, then usually you have two hot wires or black wires hooked to one black wire from your house with a screw connector. You will also have two white wires connected to one house white wire the same way! You should also have one green ground wire from your fixture that will usually be connected to a copper bare wire that is your ground! Make sure your light switch is turned off and no one will turn it back on while you’re working on the light! If someone turning it on is a possibility then turn your breaker off for that light. Then you can safely take your light down and check all your connections! It is very possible that one of your connections aren’t making a good connection or even not connected at all? You can hold your wire screw connector and lightly pull on each wire to see if it’s well connected or pulls loose? Sometimes if your careful with the power on you can wiggle wires a little and see if lights flicker at all? If all wires are connected well and you can’t find any loose, then it’s probably in the socket where you screw your bulb in. They can be replaced usually, but if that’s th problem I will usually just buy a new fixture myself! Especially if your fixtures are not LED lights. These new LED lights are much brighter and usually last years longer and use much less electricity during use! Over all you’ll be happier with a new LED fixture! Good luck!

Try cleaning the sensor- it may just be blocked and that's why it's not working.

thanks for the detailed answer. Someone told me it's probably the entire motion detector so your instructions were great