76 dart sport fuseible links

3. I put the ammeter in series with a bulb and a 12VDC source just long enough to move the needle on the ammeter.
4. Continuity, measuring from either side of repair.
5. I measured zero voltage at the ammeter to ground.

"or one of them touched ground. or as you suggested if there was a break in the shunt connections." That takes me back to identifying the shunt. A11 and R16 disappear into the harness. It would seem I have to unravel the harness to uncover the opposite ends of A11 and R16. The brake booster will have to come off, too. It's smooth in the way.

I suppose if I do find the opposite ends that there will be a wire between them and that will have to be the shunt. Then, having identified it, I can take the telling measurements. What do you think?