Swansea City's Shaun Macdonald put Wales in front midway through the first half in their friendly before second-half substitutes Lloyd James and Jamal Easter struck to seal victory.
With Wales facing Northern Ireland in September and taking part in a mini tournament in France in October, it was ideal practice for Wales and followed a 0-0 draw against the Turks at Haverfordwest on Tuesday.
Wales made the brighter start and when Robert Davies sent a free kick into the penalty area midway through the opening half, Macdonald reacted well with a precision near-post header that whistled into the net to put the home side in front.
The Swans attacking midfielder almost added a second two minutes later, only to see his 35-yard shot to fly narrowly wide.
Swans team mate Chad Bond almost scored, but for a great Soner Bala fingertip save.
Wales suffered a disappointing setback in time added on in the first half when Emrullah Guvenc's shot from the edge of the area rebounded off the bar and deflected off defender Lloyd Jenkins for a cruel own goal.
At the interval, manager Brian Flynn introduced Easter in place of Yeovil's Skewen-born Dale Williams and just ten minutes later he darted down the right wing and his pin-point delivery was seized upon by James, who finished the move off with a low shot beyond the reach of Bala.
With four minutes left, Easter was again involved, this time engineering an attack into Turkish territory, linked with Cardiff colleague McDonald and netted with a pin-point shot from 15 yards.