OM3241 Operation - Section 32 Operator Cab and Controls Page 32-25 REAR AXLE LIGHT BAR FIGURE 32-1. REAR AXLE LIGHT BAR 1. Backup Lights 2. Retard Lights 3. Brake Lights 4. Backup Alarm Brake Light NOTE: The brake light is functional at all times regardless of key switch position. All other lights (and the backup alarm) are only functional with the key switch in the RUN position. Brake light (3) will illuminate when the operator depresses the brake pedal. The red light signals to traffic that the truck is slowing. Backup Lights Backup Alarm Backup lights (1, Figure 32-1) illuminate when the operator moves the directional control lever to REVERSE.
The lights can also be activated by using the backup light switch in the cab. Using the switch turns the lights on regardless of directional control lever position. Backup alarm (4) will sound when the operator moves the directional control lever to REVERSE. The alarm can also be turned on by using the backup light switch. Using the switch turns the alarm on regardless of directional control lever position. Retard Lights Retard lights (2) will illuminate when the operator uses the retard function to slow the truck. The amber light signals to traffic that the truck is slowing.