A/C Trinary Switch. Global Parts Distributors. In earlier vehicles, they are used to directly turn the compressor off to avoid compressor failure. Warranty Duration. 207791, 20974, 29-30233, 2930233, 357-959-139B, 357959139B, 43-MT0886, 43MT0886, E95-1131, E951131, MT0886, MT0886-10, MT0886-20, MT0886-5, MT088610, MT088620, MT08865, SW-133, SW10079, SW133.
