Re: Deader than a doornail
Post #9 above states things that are utter nonsense regarding what happens when resistance increases or voltage decreases. Please stop spreading BS. When resistance increases, current decreases. When voltage decreases, current decreases. It's Ohm's Law.
Similarly, people define heat soak differently, which is why I ask for a descriptoion of what's happening, not ambiguous buzzwords/phrases. I'd call a possible heat soak slow cranking with a good starter, solenoid, good charged battery (12.6V min), good (high current) wiring, correct connections and correctly placed connections (ground the engine). Not many people are willing to make sure that all those have been verified.
I'm not a fan of adding another solenoid. It just adds complexity to the problem.
The OP's no power issue is likely, as already stated by many, a bad low current connection, or fusible link.