Watch the Super Wah online guitar lesson by Oz Noy from Essentials: Funk Rhythm Guitar
The second guitar part in this song is very important, keeping the groove together and setting a backdrop for the wah wah action. For the primary guitar part, accent on the one beat of the bar with the left hand, keeping the right hand moving up and down. The wah wah will add in a voice between the mutes and the accents, acting as a "third hand." Experiment with the wah wah voice by adding fills and slides into the rhythm.