Incandescent bulbs work, LED do NOT work
Hi. I've searched to the best of my ability folks mentioning why incandescent bulbs work and LED do not work, but I've been fruitless in my endeavor. I have a 2003 Fleetwood Tioga and only 1 dual ...
Forum Discussion
wa8yxm wrote:pnichols wrote:
However ... quality LED bulbs do have circuitry driving them that doesn't care about the incomng 12 volt polarity.
Well yes. but LED's come in baically 3 (time many) Types only 3 affect this thread however
Some: as you point out, use a bridge so they work no matter which lead is positive
Some you can turn the lamp over or you plug it into the adapter the other way
Some you have to re-wire the socket.
I have all 3 kinds in this RV.
The "many" refers to Lumens and color temp and design of lamp and so many things that have nothign to do with this thread for me to list.
But as I said the led is like a check valve in a water line. Water only flows if the INLET is "positive" (has pressure) (Yes this too is not correct for electricity but I'm trying to KISS the issue)
If you install a check valve backwards nothing flows
Same for the LED.
I will also add, requiring the correct polarity on a LED bulb does not equal cheap. I have encountered can-bus compatible bulbs that do require to be inserted the correct way. They were not cheap quality.
