Car won't even crank...

KitCarlson said

8V at relay big terminal suggests a problem. You call it drop, where was the meter (-) when doing measurement? If at engine ground, then that suggests battery, or connection to battery. When warm, both clamps and internal connectors in can expand, resulting in weak connections. Measure battery voltage when cold, engine off, at posts, not clamps, should be 12.5V to 12.7V. Measure again hot, same way.

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THX. Voltage at battery is usually strong & better than 12V(but I Will double check it again both cold and Hot) Voltage at the regulator from the large +Battery post to either the ground tab of the regulator or the engine block is ~12.4V. I was measuring the 8V between the regulator +Battery post to the actual IGN wire that I pulled of the regulator. Any idea what that voltage should ideally be at each key position for that wire? I expect they might change when key is fully twisted ...I'll get a partner to help me check that.
NOTE: I also checked the gage of all the battery cables from the trunk and they are labelled with a 2 gage.