The front section of the sealed harness on Mx built trailers used to have a 7 way RV style connector on one end and smaller 6 way round plug on the other with the red,white and blue wires exiting harness before the small end. This harness has been discon

The front section of the sealed harness on Mx built trailers used to have a 7 way RV style connector on one end and smaller 6 way round plug on the other with the red,white and blue wires exiting harness before the small end.
This harness has been discontinued .
In order to replace the front section of your old style harness, you need one of these adapters plus a 170296 front harness.

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Adapter for 170296 to fit Older Mx