Uniforms of the King's German Legion Light Cavalry in 1810

I am interested in the King's German Legion light cavalry that were attached to the Light Division from May - July 1810. Contemporary sources either called them the 1st KGL Hussars and other times as 1st KGL Light Dragoons. My question is. . . did they wear a hussar uniform with a busby or a light dragoon uniform with a Tarleton Helmet?

Thanks!