Use the Lineweight Mapping dialog box to map a lineweight to a color, which the AMLAYER command uses as the default lineweight, when you change the layer color.
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               Color/Lineweight Mapping List  | 
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               Color Contains the color to be mapped to a lineweight.  | 
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               Lineweight to be mapped Specifies the lineweight corresponding to a color. Click to display a list of valid values for lineweights  | 
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               New Displays the Select Color dialog box to select and add colors to the existing Color/Lineweight Mapping list.  | 
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               Delete Deletes the selected color from the Color/Lineweight Mapping list.  | 
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               Apply mapping to existing layers Changes lineweights of all layers listed in the Mechanical Layer Manager to match the Color/Lineweight Mapping list.  | 
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               Apply Applies changes made in this dialog box to the layers and object properties of AutoCAD Mechanical toolset.  | 
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