MK1 third brake light [Archive] - Toyota MR2 Message Board

light, brake, vehicles, it’s, lights, allowing, drivers, reduce, added, ahead, accidents, mk1b, earliest, version, reason, traffic, weren’t, trunk, vehicle’s, tailgate, roof, center, chmsl, pronounced, “chimsel,”, short, sold, required, 1986, “center, high-mounted, stop, light.”

CHMSL Pronounced “Chimsel,” it’s the brake light in the center of a vehicle’s trunk, tailgate or roof. It’s short for “center, high-mounted stop light.” Before 1986, vehicles sold in the U.S. weren’t required to have these lights. They were added to reduce accidents by allowing drivers to see the brake lights of several vehicles ahead of them in traffic. (R&T) ..... so this is one of the reason why the MK1b have the light and the earliest version of MK1 dont have them