Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question
You are not clear on what "high" doesnt work - blower motor, headlamps or something else. If the blower motor, this is either the blower motor relay or the blower motor. If the headlamp, this is either the relay, headlamp switch, dimmer switch or wiring issue.
If neither one, please clarify