So I went out today and bought a pair of LED bulbs for my 03 Z (H7(Daytime Driving Lights?)). After I installed the Driver side bulb (working) i continued to the other side and after going through all the tire removal and panel removal the passenger side does not work...
On top of that, when both sides had the LED connected, neither worked.
I tested the mystery by connecting the stock H7 (Passenger side) bulb and to my surprise when that is connected, the driver side LED bulb works yet the passenger side still doesn't.
What is happening?
Why does only one side light up at a time with the LED build (It is still a 12V)
I thought maybe i need a new fuse, but if the LED bulb has a low wattage, it should be an issue...
Thanks for any help!

 

Flip the bulb and try again. Only one side of the LEDs work. Experienced the same thing with my dome and license plate LEDs.

 

^ This guy.

 

Polarization my friend.

 

@Jcope - Flipping the bulb won't make a difference in this case, but thanks for the suggestion haha.

@FWM69 - if by polarization you meant the positive and negative connections, then i have already tested that possibility. It is still a 12V bulb and is still possibly 55W< and that there is no +/- on the bulb or plug, you can plug it in either way and it would still work.

Is there any possibility that the car is limiting the power that is sent to the LED due to its low wattage? If it thinks there is a lesser power capable bulb then it may restrict power so as to not blow it.

Any other ideas? I'm determined to get these bulbs in!

 

Did you try to install both while the lights were completely off? When I was installing my dome LED's, I had one of the lights on and then when I installed the other, it would not turn on. I removed one side and then the other would power on. When I turned them both to off and then installed them and and then turned them on, they both finally worked at the same time.

 

I did turn the car completely off; install both lights; and then try turning the car back on. Unfortunately, that did not work either.

Is there a possibility that the fuse may not be able to withstand - or on an opposite scale bee to high - the capacity or limit of the bulbs? This deep into electro-engineering is an area i have yet to venture to.

 

I'd really need to see a schematic of the DRL circuit to see what's going on. AFAIK, the DRL is an aftermarket add-on, required by Canada, but not OEM to the car. It sounds like both the left and right are wired in parallel, and also that neither terminal is truly a ground, but rather just a difference in potential between 2 12V+ circuits. The higher current draw of a filament bulb may be required to energize the circuit, which is why one LED works while one original bulb is installed. Hard to explain, but if you had the schematic I could do a better job. Only solution I can think of is to install both LEDs and then a resistor across the circuit, also in parallel, to provide the proper load the circuit requires. Similar to using a resistor across the circuit when an LED is used in a flasher circuit designed for a filament bulb.

 

If it is a true LED bulb then polarization is important, LED emitters only work when the power is flowing in the correct direction.

 

Sadly, i think this guy is serious...