To want to go south but drive the shafts north - heading the wrong way.
Tips
culture
辕 is the wooden shaft of a cart. The idiom 南辕北辙 - 'shafts pointed south but tracks running north' - describes acting in a way that defeats your own goal.
The vehicle radical on the left, a simplified picture of a cart seen from above. It marks the character as a part of a cart - here the draft shaft. It groups 辕 with 轮, 轴, and 辙.