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The Single Module Engine Controller (SMEC) or Single Board Engine Controller (SBEC)is located on the left inner fender panel behind the battery. Remove the battery cables and remove the battery (negative cable first, of course). The air intake for the engine passes over and cools the module. Disconnect the intake duct at the module. Now remove the screw that secures the wiring harness to the module and carefully remove the harness by pulling straight out. Finally, you can unbolt and remove the module from the fender panel. In Nov, 2002, I purchased a module from a salvage yard in Avon, MN, Martini Auto Parts. Costs $55.00 including shipping. Module worked fine. Martini sold a good product at a fair price and shipped it when they said they would. Would do business with them again. I hope this helps you. Eddie, Lubbock, TX

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Q: Where is the ECM located on a 1991 Dodge Dynasty 3 3 liter how much does it cost any tips on how to install?
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