q56 help not sure if I posted in the right place

[eli84]

Hi.. my 2004 q56 is driving me insane. Rpm tachometer temperature gauge does not work. Instrument cluster lights flicker off and on like disco lights. All my indicator lights turn on an off. Brake, slip, cruise, 4wd, and plenty more. Signal light don't work. When I drive with the car it will take me anywhere as soon I as I turn it off it will not start for at least several hours. I changed ecm ipdm and fuel pump. Running out of patients. Please help. I am honestly lost confused and drained.