Re: Which is the cold Wire out of the 4 brake pedal wires???
I have a 2011 sprinter as well, that I'm hooking up a brake controller for.... I love how not a single person answered your question. Thanks guys.
The forum also “loves” when the OP never follows up in answering a few simple questions or explain the original question...............or better yet.......... post an explanation of the “fix” or what he found to help others reading this 6 years later.
I also love how some people expect answers because they are paying the members so much money for contributing.
Likely the OP isn't around here anymore.
Can anyone answer whether "cold wire" is the same as "switched wire". [Added: Answered. That is correct per the eTrailer video.]
Lots of people don't have the factory trailer wiring [with the included green plug]. When a signal is available (12 volts for older model controllers), it is common practice to get the trigger signal for the trailer brake controller by tapping the proper brake switch wiring.
At 17 minutes here "cold wire" is mentioned.
[Added:
Worthwhile for the INFORMATION that is shown about NCV3 Sprinters. Do watch the videos. Don't do everything that they do. Roger is correct that some of the techniques aren't the best. There are many other Sprinter related videos found on Youtube.]
https://www.youtube.com/watch?v=355649VGmus
It also mentions "pink with green" wire for the 2014. (As the trailer brake controller trigger.)
[Added after Dick's comment:
I didn't make the video. In the video he separates a wrapped set of 4 ea. wires. I can't tell what wire colors by the video. Maybe the guy is color blind? Regardless. It appears that the particular Sprinter in the video doesn't have the optional factory/OEM trailer harness with green connector. Even lacking any factory prep, the aftermarket brake controller is able to be connected to that 4 wire bundle for the necessary brake light trigger signal.]
The pink with green wire is not necessarily 12 volts. The newer models of trailer brake controller may respond to a trigger signal which is less than 12 volts.
Another related.
https://www.youtube.com/watch?v=3nbeHOlcF7I
An unrelated, but possibly useful video.
https://www.youtube.com/watch?v=b5raE1M20ZU
vic