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Difference Between 7-Way Wiring Diagram that Uses Red Wire and Purple Wire


The 7-way trailer connector on my trailer was damaged by accidentally falling out and dragging on the ground. I am replacing it with a new connector plug . I am following the right-hand diagram I found on your website: All of the wire colors in my trailer cable match except that there is no purple. There is a red however. I connected the red to the center terminal where the purple would go. Is this going to work? Or am I going to short out some of the wiring? I was unable to gain access to the back of the old connector as it was molded around the wires.


Expert Reply:

There are actually two ways that 7-way wiring colors are commonly seen. One uses a red wire and the other a purple. The circuits they represent do vary though. So check out the updated diagram I attached to this page and most likely you need to wire the connector up like the center one.

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expert reply by:
Jameson C

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