Battery Charge Wire

[Scott91370]

Trying to track down a charging issue with my truck/trailer. Does anybody know what color the wire is in the trailer side harness (2007 19H) that will allow the truck to charge the trailer's battery? I know the one on my truck is orange just want to make sure I am checking the correct wire in the trailer itself. I think it should be black
This would be so much easier if I had an account that would allow me to share pics somewhere...

The colors in the harness are (I think I have them labeled correctly but my gut says green is wrong):
Brown - marker/running
Green - Right turn/stop
Red - Left turn/stop
Black - 12v?
White - Ground
Blue - Brakes
Yellow - Not used (reverse/auxiliary)

Thanks in advance!!!

[Hopsing415]

Black

[Scott91370]

Thank you. I looked at a few diagrams and some of them showed different.

[Mustang65]

Here is a diagram for the 7pin cable connected to JAYCO trailers.
Don

My Registry

RVing with SOLAR

[Scott91370]

Awesome!! Thank you.