R-Class Rear Tail light problem

[Motzil]

Hi Guys
need a little advice here. lost my O/S UK Drivers Side, tail light. Auxillary activated, tried changing light bulb holder only to find no joy. searched on line and found its a common problem. There was a warrenty issue. I therefore need one of these. My question therefore is where does this connect I can see from the harness there is two power wires and an earth. However I cannot find where to connect this. any help appreciated.

 

[EmilysDad]

I don't remember any of the bulb holders on my R Class having any loom attached ... just different holders between the stop/tail & fog lights and the indicator bulbs. Bulbs were fitted to the holders & they in turn were fitted to the back of the lens.

 

[Motzil]

Hi Emilys dad that right. but there is an issue when the bulb holders stop making a connection with the metal strips on the back of the light fitting and Merc have introduceda light bulb holder with a driect feed. However I cant see where or what it connects to. is it a case that i have to a feed from the orginal loom…?

 

[EmilysDad]

Hi Emilys dad that right. but there is an issue when the bulb holders stop making a connection with the metal strips on the back of the light fitting and Merc have introduceda light bulb holder with a driect feed. However I cant see where or what it connects to. is it a case that i have to a feed from the orginal loom…?

I see. I did have a problem where a holder had arced at some time and the track on the lens was burnt, so to get the lamp to work I had to back the bulb off slightly.
I would think that the plug on your new loom plugs into the main loom somewhere ... maybe the original loom piggy backs onto the new bit

 

[mioba]

Or you cut your existing wires (brown and red) and feed into the junction box.
Without looking at the existing loom on your car thats just a pure guess/assumption.

Is your W251 pre or post facelift.

Did you google that part number as sometimes it may throw up fitting instructions.

 

[mioba]

saved you the effort

 

[Motzil]

Or you cut your existing wires (brown and red) and feed into the junction box.
Without looking at the existing loom on your car thats just a pure guess/assumption.

Is your W251 pre or post facelift.

Did you google that part number as sometimes it may throw up fitting instructions.

Hi mioba
many thanks for your relpy and efforts. I had seen the video you posted, but as I had already bought the fitting from Merc @ a cost of £15.

Therefore I figured, ”You’ve bought, it imight as well use it”. I guess I was being a little lazy, as I was hoping that someone had some knowledge, as to where it might just be “Plug N Play” But not the case it seems. I had sourced a video that I found on another form. HERE which is a little bit of a work around and uses the fittment I purchase and it‘s still far better than paying £150 for a second hand light for it to only happen again.

 

[Motzil]

Ok guys I’ve fitted the above device however the side light doesn’t come on straight away the break lights work ok but the side light has a 16 second delay then it comes on. Can anyone suggest a reason for the delay