Agilent Technologies Agilent E6474A - Manual (Page 179)

Permanent In-Vehicle Hardware Installation D
Agilent E6474A User’s Guide 179
Connecting the ignition sense lead to a switched 12 Volt lead
Locate a switched 12 Volt connection. Refer to the vehicle
wiring diagrams to find the appropriate location.
Speed Pulse Cable
This cable is only included if you have ordered the Agilent
direct connect GPS DR with mag mount antenna (E6473B
option 030) or with permanent mount antenna (E6473B option
031). The GPS DR requires the Speed Pulse cable
(E6473-60207), which is connected to the vehicle’s digital
odometer or speed pulse lead.
NOTE
The odometer pulse lead typically originates from the computer module
(PCM) in the engine compartment. Contact your vehicle supplier for
assistance in locating the correct lead in your vehicle.