LLC tech. 6 years ago. Turn photo eye away from possible source of light at night. Try gently wiggling the switch to see if this causes a flicker. Light reflects off house and triggers sensor. It lights up but flashes on/off about once a second. 7 years ago. Reaction score If it it a new install it may be the sensor picking light. The consequence is that it will not light up when it flashes. But then that's it. One of our security lights started flickering on and off on the day we had that heavy rain. SOURCE: outdoor cfl lights come on. 0 0? If it does, you’ve found the problem. It does not come on when it detects movement. Any advice? It's rated for UK mains and draws 50 W so I reckon it's some problem with it's transformer. Lv 6. I prefer a non flashing system tbh. Flashing meant "find the bad bulb". Confirm visually that the security lights have gone off and then turn the breaker back on. It's got no dimmer (I know about LEDs and dimmers), its just on/off. Antonio. If the drive is waterproof, if it is good, it will just break the lamp bead and replace the light source. my outside security light keeps flashing off quickly and back on again, I have adjusted the sensor and dials? The light will reappear but should go off after a few minutes. A poor connection between the light or fixture switch and the bulb can cause flickering. Setting Motion Detector Flood Light Sensitivity Background: Sarah, a Homeowner from Ann Arbor, MI Question: My outdoor flood light that is attached to the garage keeps going off and on. The lamp bead and the drive are broken. This electrical question came from: Bob, a Homeowner from Los Angeles, California. It come on about 5 min, then back on with 5 min., what could be the problem? 2) Wiring is suspect. Arms. I had observe that the new light fixture goes on and off. Do not expose photo eye to direct sunlight. It is on for about 10 minutes and off for about 20-30 minutes. This official sponsor may provide discounts for members. buzzlightyear-Esteemed. I wound up replacing all of the bulbs a few flashing sessions later as it often counted old bulbs with poor seating as bad. Flickering Lights. Re-aim or block light. I replace an old outside light fixture with a new Area dusk to dawn fixture. If your light is already flickering, try toggling the switch on and off and see if … If you dont know shut up! Faulty Light or Fixture Switch. I don't have repair for defective product. I purchased and installed a new 100-watt high-pressure sodium lamp (and left the new sensor in) and it was like a new light … We switched it off and then back on the next day but now it doesn't work. As soon as u switch light ON, bulb comes on and then goes off after like 2 seconds. If the light from your security lights is flickering, the course of action depends on whether the problem lies with single or multiple lights. Check the bottom of the bulb, and wipe it w/ paper towel Sometimes it is loose connection. 2 0. If the light comes on and then goes off a few minutes later, first replace the lamp. It this doesn't correct the problem, then the sensor would need changing. If not the bulb it is the ballast. I do not know why your neighbors light flashes every night, but a blinking porch light is used to signal police or ambulance during an emergency. 4): If the outdoor lighting also has a strobe light, the light is in the water. If it is an old install, first check bulb. Never seen so many stupid answers. Tighten the socket to the power source. Two cfl lights will not exceed load rating of photo-eye 1) Put black tape over photo eye and see if lights turn off. If the light is set up for it, turning the light on and off rapidly two or three times will cause it to blink continuously. I had this happen and it turned out that there was an outdoor circuit with 12 outdoor coach lamps on it. 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