ello i own 1.1 seicento and i have noticed that i get temperature red light indicator but water is good no leaks or below the minimum and they are warm i sort it out the fans and the fans worked fine the only problem is the plug of the fan ( i fixed by the way) but the red light in the dash is still open and i am guessing a electrical problem PLS HELP and the red light does sometime be a strong red light but sometimes is fading WTF?

That light is supposedly indication of the engine generating excessive heat.

As you say it could be poor wiring connection

If the light is fading on and off it is possible that the temperature sensor has failed letting coolant into it and causing a partial short circuit.

First thing is to change the sensor, cheap and normally easy (I don't know what access is like on the Sei).

Robert G8RPI.