Browse Cummins QSX15 Engine Wiring Harnesses for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 5 listings. Cummins QSX15 Engine Wiring Harness pricing ranges from $53 to $450 based on recent marketplace data. Filter by condition, price, or year to find the right Cummins QSX15 Engine Wiring Harness.