My point about using clamp-on is to not to disturb the wiring at much as possible until you narrow down close to the suspected location,
I agree for the most part. However, you can't always get a clamp meter where you need to easily (like in my case where the Y connectors are under the panel). Also, not everyone has a DC clamp meter. Many only do AC. Early in in this tread I assumed it was an AC only clamp meter, and that is why the probes were being used.