2004 LS V8, 168K miles. Got in this morning, turned the key and nothing. Warning lights go out as usual with the key in start, but no crank and not so much as a click from a solenoid. Check the battery, up to full charge, terminals clean and tight. Tried starting again, same result (sign of insanity, I know) Turned on the headlights and tried to start, no crank and the lights did not dim. Apparently the signal to crank is not getting to the starter solenoid. Anyone have a wiring diagram showing the starter circuit? I expect I need to start looking for the lost voltage between the starter and the key switch. Oh, almost forgot...this afternoon I decided to try again in the hope it might start so I could get it out of the driveway so we could at least use the other vehicles. It cranked right up and I shut it off and tried several times again and it started each time. So now if you go somewhere you never know if you're going to get home..."do ya wanna gamble, well do ya?"