i have a 2004 lx470. My headunit completely dosnt work. My taillights dont light up even when i hit the break.My dash cluster guagues do not work. only thing on the dash that does work is the lights besides the guages. head lights work and cabin lights work and most other lights. The security light on the headunit works but thats it. I was driving like a week ago and the car died i replaced the battery so i think its the altneator. Im about to replace that could that fix all 3 three of my problems.If not anyone have any ideas what could have gone wrong in my elctrical system. It only had 68k on the odometer before it went out. I just but a ranch hand on like a month ago. Any imput would help alot.