It looks like ORIGINALLY, it cooked both wires. Since then, I thought I had it fixed and got it running again. I did replace the alternator thinking this may be the problem.

This time the black wire is slightly melted under the dash, and the fusible link is also cooked now....so a repeat.

So my idea that the amp meter is the blame may not be the case, but at least I'm narrowing it down.

So am I correct to narrow down possible culprits FOR NOW to the ignition switch, headlamp switch, or horn relay?

Thanks!

eightlitermopar