my 1999 20v twincam doesn't start

Hi im new here
my corolla went for overhauling, but now can't start, the engine orange light appears to flash when the ignition is off and disappears when turned on, temp gauge shows overheating while off and goes back to normal when turned on, fuel pump not getting any power, seems to be a loss of power to the distributor,,, I've taken it to few guys for wiring checks and repairs with no success