2 weeks ago I swapped the heater core in my truck I was then able to put it all back together and it ran fine only problem was I left a vacuum hose off so i couldnt switch where the heat was blowing. also i was having problems with my head lights flickering on and off. so yesterday I take the dash halfway out plug back in the Vacuum line no problem and I start working on the wiring and when I thought I had it and hooked back up the battery and when I did that the hazards on the dash come on and stay light with no key or switches on. Also the truck will not start. PLEASE help I have no idea what I did or how to fix it. Has anyone else done this or seen this problem before?