Peter is correct on the location. If you want to save a buck I recommend getting a standard thermal flasher from a parts store. I found one that fit right into the old relays cannister and rewired it by adding a standard 3 prong thermal flasher. Most flashers have letters on them designating what they are suppose to be connected to. Through some trial and error I have come up with what works correctly. The flasher should have an X, P, and L prongs on it. New wires will need to fabricated using bullets to match the OEM plug. Connect as follows:
Wire 54 will go to the X prong
Wire 31 will go to the P prong
Wire 15 will go to the L prong
You should be able to figure out the wire numbers by looking at the old flasher. The old flasher will have the numbers engraved next to the prongs. The total cost for a std thermal will set you back 10 bucks and the rewiring is necessary anyway due to the fact that mercedes doesnt make the direct replacement anymore. I hope this helps.
Jesse
Whoa stop the bus! These instructions are problematic, possibly even dangerous.
The installation above may be working but I would not reccomend doing this.
here's why.
First, the three wires that connect to the factory flasher (blinkgeber) are
15, Power (+) from fuse number 5
54, output to the turn signal switch
31, ground.
The 3 (three) terminal flasher cans sold in auto parts stores are designed for cars with a single flashing indicator on the instrument panel for both directional signals
from what I remember, the terminals are;
x. is power from the ignition
L is for the lamp output to the turn signal switch
P. is for the panel indicator.
So if a flasher were installed the way the instructions above are listed, the panel lamp output will be shorted directly to ground. It may be working but I would strongly urge people not to do it this way.
A better plan would be to use the common parts store flasher can with 2 (two) terminals , connect them to the 15 (+) wire and 54 output to the flasher switch wire and tape off the brown 31 ground wire.
Also a bracket will need to be fabricated so the flasher's clicking sound will transfer into the steering column so it will be audible by the driver.