Ford Windstar Vent Replace/Remove

Hello, I Just Bought This Van From My Parents.they Bought The Van New. The Problem Is That This Van Still Has The Original 3 Plugs And Wires...

I Have A 2001 Ford Windstar With 72k Miles And A 3.8 V-6. When I Turn On The Ac Or Heat And Attempt To Route The Air Through The Front...