All ActivityMost RecentMost LikesSolutionsRe: LED light strip problem I never figured out why it wouldn't work through the porch light but I had installed underglow to a switch off of the trailer's battery. I just ran the lights to this switch and it worked perfect!! LED light strip problem I purchased EXCELFU LED light kit from Amazon. I already had a light strip that was connected to the exterior porch light that had failed. After installing the lights to the porch light they didnt come on. I installed the cigarette lighter portion and connected to my truck lighter, worked fine. I connected the wire connections to a 12v battery, worked fine. Checked the voltage at the outside porch light, 13.49 volts. connected again, nothing. Any suggestions?