Problem with the OEM hitch wiring
Thread Starter
Newbie
Joined: Oct 2006
Posts: 1
Likes: 0
From: Marlboro,New Jersey
2004 ML350
Problem with the OEM hitch wiring
Hi, everyone
I installed the OEM hitch in my 2004 ML350 six month ago whithout any problems smooth installation. In my opinion I was ready to go just waiting for this time of the year to take my boat out of the water, well guess what yesterday I hook-up my trailer and only the running lights work,no brake or signal works. I checked the bulbs and they are OK! I hooked my old Ford Explorer to the trailer and everything works. have anybody else encounter this problem? Do you think is a defective module box or the wiring harness was assembled wrong from factory. I called my dealer where I bought the OEM hitch and the say there is no warranty because I did the installation. Any advise? should I go and buy the module box by itself or should I buy the wiring harness again?
I installed the OEM hitch in my 2004 ML350 six month ago whithout any problems smooth installation. In my opinion I was ready to go just waiting for this time of the year to take my boat out of the water, well guess what yesterday I hook-up my trailer and only the running lights work,no brake or signal works. I checked the bulbs and they are OK! I hooked my old Ford Explorer to the trailer and everything works. have anybody else encounter this problem? Do you think is a defective module box or the wiring harness was assembled wrong from factory. I called my dealer where I bought the OEM hitch and the say there is no warranty because I did the installation. Any advise? should I go and buy the module box by itself or should I buy the wiring harness again?
Newbie
Joined: Aug 2004
Posts: 8
Likes: 0
'01 ML430. '63 Caddy Convertible
I had the same problem couple of months back.. Until I remembered a posting here about checking for the fuse. The fuse (I forget the fuse number) is not installed at the facory. I believe it is a 20 A. Good luck
Newbie
Joined: Mar 2010
Posts: 2
Likes: 0
2004 ML350
I had the same problem. Your converter may need to be replaced.
Check this out.
http://en.wikipedia.org/wiki/Trailer_light_converter
Good luck.
Kyvan
Check this out.
http://en.wikipedia.org/wiki/Trailer_light_converter
Good luck.
Kyvan
