Detector for electric appliance and braking air pressure of traction automobile trailer parts

The utility model provides a detector for an electric appliance and braking air pressure of the trailer of a traction automobile, comprising a support larry, a barometer, a windpipe tie-in, a seven-core spiral flexible cable, a seven-hole trailer socket and a detecting combined lamp. The barometer, the windpipe tie-in, the detecting combined lamp and the seven-hole trailer socket are installed on the support larry, the barometer and the windpipe tie-in are connected with a windpipe, one end of the seven-core spiral flexible cable is connected with the front end of the seven-hole trailer socket, and the rear end of the seven-hole trailer socket is connected with the detecting combined lamp. The utility model with simple structure and convenient use solves the problem that the power supply and the air supply of the trailer of the traction automobile can not be detected; the utility model can find failures conveniently and guarantee the good function of vehicles when leaving factory.