** SOLVED71 Demon key buzzer harness plugs in where?

Go to MyMopar and download the 71 factory service manual You may have to settle for Ply vs Dodge, or vise versa Page marked 8-161 in the Plymouth Chassis manual

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The MyMopar 2- page aftermarket diagrams are fine "for what they are" and sometimes easier to follow. But they are not complete for options, and don't show all the connectors