No brake fluid is getting to my rear drum brakes.

cudamark said

That will tell you that the switch terminal isn't grounded, but, doesn't tell you anything about the rest of the system.

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Cudamark, I didn't see this post until after I wrote my last post. I think we're on the same page. Thanks for your guidance.
I agree with you on tracking the flow, and I started that process; unfortunately my flare nut wrenches suck. I started to round off the hex on the tube nut outlet going to the rear brakes. I need to upgrade from my ebay sourced, Chinese junk. Any recommendations there?