Two up with two to play, Wilson let his lead slip and MacDougall fought back to square the match and take the tie to extra holes but Wilson holed an excellent put at the first extra hole to win through to round 2. In round 2 on Wednesday, Wilson will play Gregor Cannon (Wigtown & Bladnoch).
The other Ayrshire players who finished their first round matches on Monday evening had mixed success.
Jack McCluskey (Ayr Belleisle) took his opponent, Martin McCorkell (Gleddoch) to the final hole in their tie but lost out by two holes.
Callum Gorrie (Kilmarnock Barassie) brought better news with one of the biggest wins of the day, beating Sam Kiloh (Portlethen) by 7 & 6. The possibility of an all Kilmarnock Barassie second round tie was dashed however, when David Clelland (Hamilton) secured a second round match against Gorrie on Wednesday with a 4 & 3 win over Colin Currie (Kilmarnock Barassie).
David Wilson's Scotland boys team mate Euan Walker (Kilmarnock Barassie) also went into extra holes before beating Grant Stewart (Pitlochry) at the 20th to secure a second round match on Wednesday with Greg Forrester (Lundin).
The remaining first round matches and some second round ties will be completed on Tuesday.
Ayrshire players still to play their opening matches are Blair Gavin (Kilmarnock Barassie), Christopher Murray (Troon Welbeck) and Greg Telfer (Prestwick St Cuthbert).