Polarity Issue

Imagine getting new LED headlights installed and it doesn't turn on. Frustrating, right? Especially when you have spent a lot of time and money on it. Sometimes only one of the headlights works and another bulb doesn’t work at all. click to view listing >

If you face any such issue, then you first need to check the connections. It could be a defective LED adapter. You can try out some of these solutions if it still doesn’t work:

- Try to reverse the adapter’s input

- Check if the grounds are properly linked

- Make sure that the fuse is working

- Ensure that the power system for each gadget is secure and not interconnected. Polarity Issue

Besides having a proper adapter, you also require a specific polarity way while using a dual filament LED bulb. This is not a gadget issue but the way you have switched the connection. If your LED headlights automatically turn on as soon as you connect them with the power, then you should flip the power around.