2005 Dodge Magnum RT 5.7 Engine wiring harness
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You can't order one, those have been discontinued for years (that harness would have been only 05-07, 08 being a one off). You'll need to look online (like Ebay or car-part.com) or run the junkyards. Luckily, for strictly engine harness you can use one from a Charger or 300 those years as well. DO NOT stray outside the 05-07 year range.