MAINTENANCE AND LUBRICATION 299
Electrical Accessory Connection Points
CAUTION
The electrical systems on all MACK chassis include a circuit breaker located in the
ground circuit. Any additional electrical components that may be added MUST not
be connected directly to the battery or negative connection of the starter. Doing
so may defeat the protection provided by this circuit breaker. Components may be
ground connected to other locations, such as frame or engine grounding points.
This MACK chassis is ready for convenient installation of electrical
accessories. Use only the designated CB jacks on the dashboard, or battery
post (12 volts), ignition, ground post, buffered tachometer (RPM) output, and
buffered speedometer (MPH) output connections available on the electrical
equipment panel. Each connection point is described below.
Battery Post (BATT)
This is a 12-volt, unswitched battery power connection. It can be used to
power external devices that require power at all times, even when the key is
turned off. This source is protected by a 20-amp circuit breaker.
Ignition Post (IGN)
This is a 12-volt, switched battery power connection. It can be used to power
external devices that require power only when the key is turned on. This
source is protected by a 15-amp circuit breaker.
Ground Post (GND)
This is a ground connection. It can be used as a power return connection
for external devices.
WARNING
The tachometer output, speedometer output, and serial links A and B are
for specific hookups. These terminals should be used only for their specified
purposes and connection to these terminals should be done only by a qualified
service technician.
Summary of Contents for Granite GU Series
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Page 44: ...SAFETY INFORMATION 33 Advisory Label Locations On Vehicle Labels Found on Chassis C0029831 ...
Page 45: ...34 SAFETY INFORMATION C0028958 ...
Page 46: ...SAFETY INFORMATION 35 C0028959 ...
Page 47: ...36 SAFETY INFORMATION C0029013 1 Right Side Frame Rail 2 Hood Prop ...
Page 48: ...SAFETY INFORMATION 37 C0029014 ...
Page 49: ...38 SAFETY INFORMATION Labels Found on Driver Side Sun Visor C0029832 ...
Page 50: ...SAFETY INFORMATION 39 C0029016 ...
Page 58: ...SAFETY INFORMATION 47 C0029833 ...
Page 60: ...SAFETY INFORMATION 49 C0029834 ...
Page 62: ...SAFETY INFORMATION 51 C0029835 ...
Page 72: ...INSTRUMENTS AND CONTROLS 61 Panel B W3056238 ...
Page 81: ...70 INSTRUMENTS AND CONTROLS C0029141 ...
Page 82: ...INSTRUMENTS AND CONTROLS 71 Diagnostics W3036575 W3036576 W3036583 ...
Page 84: ...INSTRUMENTS AND CONTROLS 73 C0029144 ...
Page 113: ...102 INSTRUMENTS AND CONTROLS C0029240 C0029241 ...
Page 235: ...224 OPERATION C0029351 ...
Page 241: ...230 OPERATION C0029352 ...
Page 284: ...MAINTENANCE AND LUBRICATION 273 C0029851 C0029852 1 Towhook Access ...
Page 305: ...294 MAINTENANCE AND LUBRICATION C0029434 1 Front 2 Back ...
Page 317: ......