Horn wiring

[pablo2696]

Hi All!

I´m having a little trouble with the horn wiring and I can´t get the horns to work. At first I thought the horns were broken so I decided to replace them. Then when I connected the new ones they didn´t work either so I´m guessing it is a wiring issue since I´ve tested both horns and they work fine.

The wiring for the horn that goes behind the grill is pretty straight forward. However, the horn wiring that goes by the right fog light has two pink/black cables and I have no idea how they are connected. I used this diagram here but it says that both horns are behind the grill so I´m guessing that´s not the right diagram.

I have the most basic understanding of wiring circuits so thanks in advance for the help and patience!

Ps: The 1st and 2nd picture are from the horn behing the grill and the 3rd picture is the wiring of the horn that goes behind the bumper with three cables (seems that there is an extra one). I´ll make all connections nicer whenever I get the horns to work.

 

[gsxr]

The two wires of the same color likely get connected together. The diagram you are using is a copy of the factory manual and although it isn't 036-specific, it's a pretty simple circuit. If the fuse is good, the next step is to pull the airbag (and possibly steering wheel) to check the contacts.

 

[speedy300dturbo]

I've fixed bungled horns on W124s a few times, and most of the time it's either a bad ground or fussy contact behind the steering wheel. Later models had a clockspring instead of slip rings, and these do fail on occasion.

Ground the brown horn wires directly to the chassis. Next test for 12volts at the pink/black wires when you press the horn button. Also try having an assistant press the horn when turning the steering wheel side to side.