I have a 1999 4Runner Limited 6 cyl 4WD. It was working fine but the other day I went to start it up and got a single click but nothing else (the starter solenoid engaging). Not the dead battery machine gun clicking, just one click from the starter solenoid. Just to make sure, I charged the battery and verified that wasn't the problem. So after a search here, I was pointed to the solenoid contacts in the starter so I replaced them and...single click. So I ordered a starter and replaced it and...single click. Seeing something mentioned about a bad ground wire, I put one jumper cable from the ground on the battery to the engine frame and...single click. This doesn't make sense to me. Got 0 ohms and 15vdc on positive side of the battery and fusebox. Any other suggestions since the wife now is starting to suggest we buy a new/different play car for our weekend adventures and retiring the 4Runner. Please help!