How to use the trailer handshake valve connector

1. First, connect the two gas connectors on the tractor to the two gas connectors on the semi-trailer.

2. Secondly, you can't connect it wrong. The right side of the semi-trailer is the gas connector (red) of the inflation pipeline, and the left side is the gas connector of the control pipeline (the handshake is consistent with the color connection of the gas pipeline).

3. After the gas connector is finally connected, unscrew the gas path connection and separation switch of the tractor's upper semi-trailer to make the gas path in a ventilated state, otherwise, gas cannot be supplied to the semi-trailer braking system, and the braking system will not work.