Turn signal is turned on to vehicles and pedestrians around, prompt attention to important indicator when a motor vehicle steering. Turn signal lamp using xenon lamp, MCU control circuit, about the rotation stroboscopic uninterrupted work. Turn signal flasher adopted to achieve the lights flashing. Can be divided into resistance wire, capacitive and electronic three. Resistance wire type which can be divided into hot wire type (electric type) and wing piece (Bounce), and can be divided into electronic hybrid (with contact-type relays and electronic components) and the all-electronic (no relay ). For example bounce flasher, the use of current thermal effect principle to thermal expansion and contraction as the driving force, the spring piece mutate action to turn on and off the contacts to achieve the lights flashing. By the use of materials sub-divided into: a gas car turn signal; 2, LED car turn signal. Pressing the cradle to the sub-divided into: 1, P21W; 2, PY21W; 3, W21W; 4, P27W; 5, W5W; 6, H5W. By location sub-divided into: 1, front turn signals; 2, turn lights; 3, side lights Hardware Factory Changzhou, Changzhou bolt, Changzhou automatic garage door www.ccclbj.com