TM 9-2320-272-24-1
1-22. ELECTRICAL SYSTEMS OPERATION (Contd)
h. Trailer and Semitrailer Connection System Operation.
The trailer receptacle is identical on all models covered in this manual. The semitrailer receptacle is on
the tractor body only.
Key Item and Function
1 TRAILER RECEPTACLE - Provides vehicle lighting, auxiliary power, and a ground circuit for
trailers.
2 SEMITRAILER RECEPTACLE - M931/A1/A2 and M932/A1/A2 vehicles equipped with a fifth
wheel are provided with a semitrailer receptacle. This receptacle provides vehicle lighting, auxiliary
power, and a ground circuit for semitrailers.
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