Need help soldering

[Arct1k]

Brushless motor? - Have the wires been shortened at all?

You may be stuck - some motor leads are extensions of motor windings and hence can't be shortened - they have an insulating laquer on them which is why the solder isn't flowing.

I think there are a couple of threads that you might be search for about using solvent to strip the insulator but you have to be careful as might wick into motor and cause a short.

A pic of the motor might be helpful. Rgds