Help! I'm trying to hook up my 2001 ML 430 and I'm having issues with the electrical set up. What is the deal with the brakes?
Someone looked at it today adjusted all of the other wiring to the plug, but said there's a full 12 volts on the wire.
If it is controlled by a module, then why is it not recognizing it has a trailer?
What is wrong with it and how can I fix it?
Thanks.
