Other Electrical Noises; Ground Bonding - Vertex Standard VXD series Installation Manual

Step 1.
Mount Capacitor
(0.5µF Coaxial Type)
to vehicle chassis
using lockwasher and
self-tapping screw.
Step 2.
Disconnect wire (dashed)
from battery post and
connect to capacitor
using lockwasher and nut.

2.4.5 Other Electrical Noises

Other elements of the electrical system which can generate noise are listed below. These can be sup-
pressed by connecting a 0.5 μF bypass capacitor between the noise source and ground.
1. Ammeter-to-battery lead
2. Gauges (oil, fuel, temperature)
3. Ignition Switch
4. Lamp bulbs (headlamps, tail lamps, dome lamps, etc.)
5. Accessory wiring (electrical fuel pump, electric windshield wipers, heater fan motor, window
openers, etc.)

2.4.6 Ground Bonding

If a vehicle is not properly bonded to ground, static charges can increase. This increase can cause
noise from electrical arcing. This type of noise is suppressed by bonding the part using one-inch wide
ground straps (keep them as short as possible). Some common points where bonding may be helpful
are listed below (see Figure 2-7).
A. From engine block to the firewall.
B. From engine block to vehicle frame at points where the engine is shock-mounted.
C. From the battery ground terminal to the vehicle body.
D. From top of front wheel "A" frames to chassis, particularly in cases where rubber-mounted mem-
bers are used.
Vehicle
Battery
Post
Armature
A coaxial capacitor can
be added here, if required.
Figure 2-6 Voltage Regulator Noise Suppressions
Chapter 2 Reducing Noise Interference
Step 3.
Add lead from battery
post to capacitor using
lockwasher and nut.
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