So on Monday, my Jeep Wrangler (6 speed) cranked up and ran just fine going to work. Had it up there over night due to staying out of town Monday night and coming back Tuesday. After coming back, I tried to start it and had no sign of cranking at all. I get power to the dash, radio turns on and what not but just won’t crank, not even a click. My battery reads 12.6 and the key does not have a battery in it. Had a buddy try to start it in 4 low and unfortunately no luck. Where would be a good starting point before I decided to take it to a shop?