Guys, you are trying to make this troubleshooting process TOO HARD! All you have to do is use a DVM across each component and cable while someone tries to start it. Wherever you find the large voltage drop indicates the failing link. The Voltage drop test must, however, be done with a healthy, fully charged battery.
Think of this as a chain. You are testing each link of the chain with the Voltage test. When you find high voltage across one of the chains links, that is the bad link.
Hope this helps,
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Doc
ASE Master
1964 Galaxie 500 2 Door Hardtop
2006 Mustang GT Five Speed
1978 Ford F150 4X4 that I bought new
2000 F150 4X4 Five Speed V8
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