Good afternoon I have a Fiesta 1.8 16v XR2i, I have a problem with the car since I bought it, the pointer when I turn the ignition temperature will soon to the middle of the display, and pointer gasoline rises around 2 mm when I turn the speed heater the lights and when I click the button to raise the glass, and the battery light comes on but not too strongly when I do these processes,
*** And when I click the button to raise the glass spins the pointer rises eg from 3500 to 4000.
*** The battery is 2 years, the water temperature sensor is new the alternator charges the battery at 14.20 volts. Already checked wire to wire and never know what's going on with the car electronica.
Have any of you guys know me explain this phenomenon?
Help: (

 

Could it poss be a bad earth some where ??

 

Could still be alternator, some fuck up and run in reverse,