Yeah it's as I stated. You're wrong to ignore everything else on the presumption that it may have "12 volts" and that that is all there is to it.
Batteries can have 12.4+ volts and when a significant load is applied they drop off to nothing.
Cables and grounds can read 12.4+ volts and not be...
I'd almost bet on shorted battery though, you may just go have the battery load tested first, I mean with an actual carbon load pile, as long as your battery is above 12.4 volts as confirmed by your DMM. I'm not a big fan of the conductance testers...
I should have asked how old is the batt and...
Okay, battery voltage exactly?
Battery voltage at starter exactlty?
Above 12.4 at least? Okay.
Place lead of Digital Multi Meter on a good ground and + lead on the ign terminal side of the starter relay, should read 0, have someone turn key to run. Do you get voltage? If no, check to see you...