The “Knight Rider Theme” was composed by Stu Phillips and Glen A. Larson.[5] The series DVD bonus material contains an interview about this lead music, where Glen A. Larson says he remembers a theme out of a classical piece (“Marche Et Cortège De Bacchus” Act III – No. 14 from Sylvia written by French composer Léo Delibes) from which he took pieces for the “Knight Rider Theme”. The decision to use synthesizers was largely a network decision. Larson claims that they used five or six synthesizers, drums and a Fender bass.

https://en.wikipedia.org/wiki/Knight_Rider_(1982_TV_series)

Here’s the classical piece in question. The theme first happens 31 seconds in.

The Knight Rider Theme was heavily sampled in the 98 remix of Busta Rhyme’s “Turn it up”.

Which was in turn used in Panjabi MC’s worldwide hit Mundian To Bach Ke.

And in the dancehall reggae Knight Rider riddim.

Though my favorite use was in Timbaland and Magoo’s Clock Strikes Remix.