No front light, no tail and brake lights, no horn. PLEASE HELP !

[LiviuTincu]

Hi guys, I need some help from you. As the title say, now many lights I have left on my car , 2010 MZ3 standard. At the beginning was just one brake light that didn't work, I have tried to fix it ( was a led light in the lower bumper). After I solder new wire lot led, I install it but I have noticed that no brake lights at all, none from 4 , to original ones and two led. After that I noticed that the horn didn't work as well, wtf :bang . At that point the headlights were working. I went to remove the bumper again to check the wires and lights, it was getting late and I turned the car on to get out and let my wife park in the garage, but no lights at the front, no low , no high, wtf is going on .
After so many hours of checking , I run out of ideas.
All fuses are good
The fuses for headlights and tail lights are not getting power, no power goes through them
There is no power to relay, they don't click when turn the light on
I moved all relay around, same thing
Dashboard illuminates normal
No fault codes

Please , send me some of you thoughts
:(

[Hyperion]

My thoughts are warranty.

[LiviuTincu]

Sorry , it's 2010 not 2015, my bad. I have asked admin to change it.

[r4BBiT]

Did you unplug negative terminal from battery when you were soldering the wire? If the fuses are good you could of fried one of the junction boxes (I think there more than one).

[natspriceless]

I am by no means an expert but I remember having a similar situation as this with my '05 and the culprit was something relating to the horn. I can't quite remember the details but there is a very good chance that I have the paperwork from my mechanic at home that has the details of the situation. I just remember thinking "wow, it's silly that a horn can mess with the lights" and then I felt terrible that I had been driving around without break lights and had no clue.

[S.F.W.]

I am by no means an expert but I remember having a similar situation as this with my '05 and the culprit was something relating to the horn. I can't quite remember the details but there is a very good chance that I have the paperwork from my mechanic at home that has the details of the situation. I just remember thinking "wow, it's silly that a horn can mess with the lights" and then I felt terrible that I had been driving around without break lights and had no clue.

The horn fuse is tied to the break lights. In an automatic if the horn fuse is blow, the parking lights will not engage, and you will not be able to shift out of park.

[natspriceless]

The horn fuse is tied to the break lights. In an automatic if the horn fuse is blow, the parking lights will not engage, and you will not be able to shift out of park.

YES!! Now I'm remembering the situation...I had to pop out that little piece to be able to shift out of park and it's when I got it to the mechanic the told me about the lights. I was going crazy trying to remember how I had come across this problem lol

[LiviuTincu]

I took the car to a mechanic today, he find out that one wire was broken somewhere between fuse box under the hood and brake light. He had to reroute another wire I understand . Also one fuse was gone , I have no idea how I could not find it since I looked three times, maybe because was not related ( this is what I thought ) to my problems. On top of these, one of brake bulbs was fried but could not see that easily ( or I need glasses ). Anyway, all good, now, front lights, back lights and horn are up and running . For how long, I will see. Thank you all for your time and imput.
PS: don't mess around with electrical system if you don't know where to search .