What is the difference between Wilayat of Imam Ali as and taqleed?

Wilayat of Ameer al Momenin is related to our faith and all our actions (including ebadaat (worships)and Mamelat (dealings) are depending upon the Wilayat of Ali (a.s).
While Taqleed is a system where you can find the guide lines of the Islamic Shariya in order to perform your ebadaat and Mamlaat in a correct and appropriate manner.