brake spring question

[bnws]

Insalling brake shoes and new hardware in my 65 mustang ( 289 pwr drum brakes ) return springs are color coded yellow, and green. (green being thicker /heavier duty ) MY question is which is the primary return spring and which is the secondary return spring,

 

[woodsnake]

Seems logical that the primary shoe would have the heavier spring, doesn't it?

 

[bnws]

why would it seem logical, when its the secondary shoe that has more lining material and also holds the cable guide for the self adjusters

 

[Bluesman]

I did mine last year and inside the box was a paper that says which is which.
I throw nothing away so i will dig it out tonight and get back to you