well guys, i went out today to go to my grandmothers house, and my blazer wont start. no power, not even headlights. i tightned the connections at the battery, the ground from the negative cable, and tightened the positive cable at the solenoid. when i did that, the power came on, headlights worked, dash, everything was fine and when i tried to crank it, everything went out and the solenoid just clicked. the battery has a good 12.7 volts. i am going to replace the solenoid tomorrow, i was just wondering what you guys thought.