Question

You are hooking a tractor to a semitrailer and have backed up but are not under it. What should you do before backing under the trailer?

A) Hook up the electrical service cable
B) Hook up the emergency and service cable
C) Connect the ground cable

Answer 1

Before backing under the trailer, hook up the emergency and service cable, the electrical service cable, and connect the ground cable.

Step-by-step explanation:

Before backing under the trailer when hooking up a tractor to a semitrailer, you should:

• Hook up the emergency and service cable
• Hook up the electrical service cable
• Connect the ground cable

These steps ensure that the necessary electrical connections are established between the tractor and the semitrailer, allowing for proper communication and functionality of the trailer's brake lights, turn signals, and other electrical systems while in use.