I'm looking for the name and artist of a song that was featured in two 1993 commercials for Levi's Loose Fit jeans. The first ad is set in an urban intersection, while the second takes place among sand dunes in the desert. Both ads depict young teens skateboarding, dancing, leaping through the air, etc., wearing clothes that were probably considered cool at the time. 
Both ads feature different excerpts of the same song. If I had to guess, I'd say the first ad features an excerpt from early in the song, while the second features an excerpt from closer to the end. Can anybody identify this song and help me solve a mystery that's almost thirty years old?
First ad:
View: https://www.youtube.com/watch?v=jed19f6WYsk
Second ad:
View: https://www.youtube.com/watch?v=eykgY6v7WzU
Both ads feature different excerpts of the same song. If I had to guess, I'd say the first ad features an excerpt from early in the song, while the second features an excerpt from closer to the end. Can anybody identify this song and help me solve a mystery that's almost thirty years old?
First ad:
Second ad: