On my 2002 Silverado I'm installing all LED bulbs in the truck. I upgraded the stock flasher relay module under the dash with a new one to keep the LED's from hyper flashing. So today on the driver left side I put in the new turn signal LED bulbs with resistors for the higher lumen 3157 flashing rear bulb, and one 3157 bulb for the front. As well one front side mini flashing LED bulb that is lower lumens without a resistor. This was on the left/driver side of my truck. When I tested the left side, the turn signal in the back and both front signals were flashing. Then the mini flashing LED bulb stopped working. So I swapped it with a different mini LED bulb, and nothing, no flashing. I even tried a resistor on it, and nothing So I took the resistor and mini LED out of the left light socket and put back in the stock incandescent bulb, and it still wouldn't work. Now what is happening is the front 3157 & back 3157 largef turn signal bulbs that should flash. They just stay illuminated even though the left turn signal is not turned on. What could this be, because at first the front mini LED flashing turn signal along with the two 3157 bulbs front and back were all flashing fine. With that said before I installed all the bulbs, I did clean all the light bulb sockets with fast drying electrical spray/protectant. Though non of the other LED light bulbs had a problem. I thought about buying and splicing new mini light bulb sockets on the front. Then it got dark so I couldn't do anything else. And I don't believe it's a blown fuse or the front and back turn indicators wouldn't just stay illuminated. I'm totally stumped on what to do, could you please help me, thank you. ~Carl
This may sound dumb, but make sure the bulbs youre using to test are good first. After you have proven that they function as they should in a different socket, I would start by using your multimeter and testing voltage on that new relay module you put in, and then testing the sockets. You could also try take everything back to stock (relay, bulbs, etc.) and make sure it works. Good luck, it sucks chasing that kind of stuff.
@@fixitquick69 , Thank You, and use that is great idea, of putting the stock bulbs back in! Though I didn't think about my using my multi meter, (duh!) Today, I think first I'm going to install all the new LED bulbs on the right side and see what happens. I hope it's just a bad light bulb socket on the driver side, yet it could be the china LED bulbs! Unfortunately I don't know of any American made LED bulbs.
