ok this is whats going on the car starts and runs fine and out of nowhere it would stall and each time that happens the right signal light stays on and so does the radiator fan even when the key is out i checked the wiring diagram for the fan and singal light and the ground isnt the same so idk what to look for now
any help would be nice

 

Clearly it's not a ground issue. Check for shorted/crossed wires in every harness. That's the only way thatcould hhappen

 

thanks for replying do i check the wires from the fan and signal or it could be any wire?

 

Could be any wire. You've got a massive amount of work in front of you. I suggest a good multimeter and continuity tester/light. Those two tools will save you a bunch of time and heartaches

Or find a local shop with a good wiring guy and let the pros do it

 

found out the problem the two wires from the coolant sensor was touching each other thanks for your help man