Motorola APX 5000 User Manual - Page 25

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Wire Color

The yellow wire controls whether or not the APX VA radio battery charger will be "live" at all times.

Consider the functionality and vehicle battery drain current below during installation.

Standard Wiring to Vehicle Switched A+ – Charging OFF with Vehicle OFF

For installations where the radio may be left in the APX VA with the vehicle's ignition switched

OFF and minimal vehicle battery drain current is important, the standard wiring connection of the

yellow wire to vehicle switched A+ will disable charging.

Optional Wiring to Vehicle A+ – Charging ON with Vehicle OFF

When the radio is left in the APX VA for charging with the vehicle's ignition switched OFF, the

optional wiring connection of the yellow wire to always-live vehicle (A+) will keep the charger ON.

When the operator takes the radio from the APX VA, low vehicle battery drain current will occur.

See (*) below.

Condition

Battery Charging

Vehicle Battery Drain

Radio OUT

Radio IN but OFF

Radio In and ON**

*After vehicle has been off for 30 minutes (Note: Standard Wiring Configuration).

**Does not include Boost Current (to support transmit) under totally discharged battery.

3. Cut the long red lead to the desired length (as long as possible so that the

in-line fuse is located as close as practical to the vehicle battery). Then,

after running the lead through the firewall, connect (crimp) it to the plug on

the 2-foot (61 cm) red lead section that was set aside in step 1. Make sure

that the plug and jack in the lead are connected securely together.

4. Cut the yellow lead to the desired length, and then connect it to the supply

side of the fuse box, according to the above table. It is important not to

connect the yellow wire to the red lead.

5. Cut the black lead to the desired length, then connect it to the vehicle

chassis.

It is NOT a good practice to connect the supply cable black lead

directly to the negative (-) battery terminal; the APX VA could be

damaged if there is a malfunction in the vehicle's electrical system.

Red

Black

Yellow

Vehicle = ON

Yes

20 mA

30 – 900 mA

125 – 2000 mA

Vehicle Chassis (GND)

Fuse box (see below for details)

Standard Wiring

Vehicle = OFF*

2.5 mA

11 mA

30 – 1000 mA

Connect to

Vehicle battery (+)

Optional Wiring

Vehicle = ON or OFF

Yes

20 mA

30 – 900 mA

125 – 2000 mA