Be612569

Does anyone know how to replace the wiring harness on the headlights? I think I have a short in the wiring because my halos do not work. Thanks for your support.

seanjordan20

Buy new headlights unless you are will to take apart the headlights to repair. I know one night while watching a movie I taped all the wires and it lasted until I had an accident and they got replaced. That was at least 2 years

donpb

@Be612569 You most likely have exposed wires. Your best bet is to wrap the wires. I used 1/16" spiral wrap on mine. I had 17 wires to cover.

Be612569

I have new set of headlights that I did put on. Halos still doesn't come on. The main harness from the car that goes into the headlights is what I meant before on how to change out. How difficult is it?

donpb

Let's not assume it's the wiring harness just yet. Is your car throwing any codes or iDrive notifications?

Be612569

H8 bulbs aren't the issue. Neither is the new headlights. Passenger halos comes on a nd goes off after coming to a complete stop. Drive side never comes on. Jumped the driver's side to the passenger side at one point. It's a big no no because it's too much power and the LCM probably read it and gave way. So, I'm guessing it's the main harness coming from the car or either the LCM. I have already cleared the shorts using BimmerGeeks and halos still doesn't come on.

donpb

I asked, are you throwing codes or getting iDrive notifications? If it's the LCM, you will clearly see the code. You don't have to guess.

Be612569

A8c5, a8c4, 9cc5
a8a8, 9cb8

donpb

You are clearly throwing module codes, so why are you thinking it's the harness?

Be612569

This is the LCM underneath the foot panel of the driverside that needs to be fixed? How do I fix the module? How difficult is it? How much does it cost to get it fixed? I have a spare but I do believe it has to be coded.