An SGS6302GB/06 does NOT have a Turbidity sensor. Trying to fit one is a pointless excercise. The photo illustration you show is the blank end moulding on the heater box of that model. Besides there’s no connector plug for the electrics anyway! 😉
Mike_G wrote:The old part did have a sensor attached?!
In that case the heater box you are replacing is NOT the original one and the Turbidity sensor fitted to it not used. As I mentioned earlier, there’s not even an electrical connection for it. Do check and you will see what I mean. 😀