Installation Instructions

Page 9
midlandusa.com
Model MXT400
Electrical and Rear Panel Connections
Refer to Rear Panel Connections for rear panel connector locations.
NOTE: Radio antenna is installed separately.
Connecting the Radio to a Power Source
1. Connect the positive lead (RED wire with in-line fuse holder) to either
(a) the fuse block or (b) directly to the positive post of the vehicle’s
battery.
NOTE: The fuse block is usually the most convenient connection point.
The power cord positive lead can also be connected to the Accessory
terminal on the fuse block or ignition switch, so the radio automatically
turns off when the ignition is turned off.
2. Tightly connect the ground lead (BLACK wire) directly to the vehicle’s
metal frame. A good direct metal-to-metal ground is essential for
optimum performance.
Connecting the Microphone
Insert the RJ45 connector into the front of the MXT400. To remove, lightly
pinch the bottom region of the boot assembly of the Microphone and gently
pull towards you.
The microphone bracket can then be attached to the vehicle dash or other
convenient location in a manner similar to the mounting bracket.