can anybody help me please?

You should buy a voltmeter and spend two minutes learning to use it.

If you know the motor is good, the resistors are good and the fuse is good there's just one more thing to check: The switch.

Check the switch that controls the fan. I'm willing to bet it's a bad switch. But it also could be a bad wire.

If you have a volt meter check for power at the motor. Likely you don't have any. But if you do then you might have a bad ground. But if you DO NOT have power at the motor then the problem is up-stream. Check for power at the resistors. If not there, keep going up. Check for power at the switch. If it's not there then it's a bad fuse or the wire coming from the fuse. If you DO have power at the switch then it's got to be the switch. Either the switch is malfunctioning of the connector has come loose.

Hope this helps.

'')

You could as long as you put a inline fuse closed to your battery for a disconnect! There is also a relay that could be your problem!

Run a new ground to the fan housing.