Power cable connections to the vehicle, Ignition sense lead – Agilent Technologies Agilent E6474A User Manual
Page 178
178
Agilent E6474A User’s Guide
D
Permanent In-Vehicle Hardware Installation
Power cable connections to the vehicle
1 Attach the ring terminal of the black lead to chassis ground
using the appropriate hardware.
2 Ensure that a good mechanical and electrical connection has
been made to the chassis, then coat the connection with
anti-corrosive spray.
3 Connect the red lead to the battery positive (+) terminal.
4 Connect the ignition sense lead as described below.
5 When installation is complete, secure any loose wires.
6 Route the cable through the vehicle to where the E6473B is
installed.
Ignition sense lead
Connect the ignition sense lead of the power cable to a source
that measures +12 volts only when the ignition switch is on,
using one of the following methods:
• Connect it to the radio side of the radio fuse.
• Connect it to a 12 volt power lead that is switched on and off
by the ignition switch.
Connecting the ignition sense lead to the fuse block
Because each vehicle is different, you must determine the best
method for attaching the lead to the fuse block. Agilent
recommends that you crimp a quick-disconnect terminal onto
the lead, then plug the terminal into the fuse block.
NOTE
Direct Connect Hub: If you do not connect the ignition sense lead of the
power cable for the hub, the unit can only be powered on and off via its
front panel switch.
The ignition sense wire color code is specified under