Will work with any organ with a G-G terminal (B-3, C-3, A-100, B-2, C-2 etc). You will also need the 6×4 adapter when used with organs equipped with the AO-28 premplifier and the 6×5 adapter when used with the AO-10 preamplifier. Will also require a Tremolo Switch to change Leslie speed. Instructions are meant for a technicians installation and the user without some knowledge of electronics is advised not to install this kit.