I found a few cold solder joints but mainly cracked joints right at the post, only visible with 10x magnification, it seems as most of the components are very durable but suffer from tired electrical connections that can be rejuvinated.
So are you talking about the rivets that mount/connect the bullet shaped male plug posts to the post legs leading to the PCB in the Convenience Control Module?
I still have my orig CCM out and apart, and am curious to find out more about you approach. Do you mean actually soldering the rivet heads to the post legs?
Like those circled in Red below?
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