In a see-sawing game both teams created numerous chances, but the visitors proved to be more clinical in front of goal. Wanneroo started strongly and Scott Johnson twice came close to giving them an early lead, but Simon El Chami found the net first for the hosts with a composed finish.
Just as Melville started to get on top, the visitors equalised when Nathan Grostate picked out Jake Makin with a superb pass and the striker kept his cool to level the scores at half time.
The game had barely restarted when Johnson gave the away side the lead after heading home a corner.
But Melville hit back immediately when Cormack Abbott was felled in the box and Mark Lucas converted from the spot, and only the crossbar denied his header from giving them the lead minutes later.
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READ NOWHowever, Johnson soon restored Wanneroo’s lead with a superb volley which left Mirko Grgurinovic with no chance.
Shane Boyle came close to equalising for the home side before Logan McIsaac went one better when he bundled home a Lucas corner.
As the game reached its dying moments, chances dried up for both teams, until substitute Liam Wales beat the offside trap and fired past Grgurinovic.