To just replace the connector portion of the # ETBC7 you would want the part # 37185. This is the 7-way and 4-way harness that comes with the kit.
The location of the connector will play into the longevity of the connector. If it is out of sunlight and not directly behind a tire where rocks or dirt would get thrown at the connector it would last the longest.
For butt end connectors you would also want the # DW05745-10. view full answer...
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