Group 30 Electrical System—VNL, VNM
Design and Function
Switch
Function
Switch
Internal Switch Logic
Engine Brake
On/Off (Caterpillar,
Detroit, Cummins
N14)
W3000578
W3000577
W3000589
Engine Brake
Low/Med/High
(Caterpillar, De-
troit, Cummins
N14)
W3000579
W3000577
W3000583
Engine Brake
Off/Low/Hi
(VOLVO & Cum-
mins M11)
W3000578
W3000577
W3000597
Pneumatic/Electrical Switches
Terminal
Switch
Switch
Function
A
B
C
D
Interaxle DLO
To Cluster
Telltale Lamp
+12V Supply
Ground
+12V Illumination
Control
Fifth Wheel
Slide
To Cluster
Telltale Lamp
Not used
Ground
+12V Illumination
Control
Suspension
Dump
To Cluster
Telltale Lamp
Not used
Ground
+12V Illumination
Control
W3000574
W3000573
Interwheel DLO
N/A
Not used
Ground
+12V Illumination
Control
25
Содержание VNL
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