Uninstalling The Radio; Installing Dc Power Cable - Motorola MTM800 FuG Installationshandbuch

40 | Vehicle Preparation

Uninstalling the Radio

Procedure:
1 Before disconnecting the 13.2 V main power supply from the radio:
a Switch the radio off.
b Wait for a minimum of 4 seconds after the radio switch is released.
c Disconnect the 13.2 V main power supply.
2 Alternatively, turn off the main power supply without switching OFF the radio.

Installing DC Power Cable

Caution: This radio must be operated only in negative ground electrical systems. Operating the radio on a
positive ground system causes the cable fuse to short-circuit. Check the vehicle ground polarity before you
begin the installation.
Procedure:
1 Determine a routing plan, keeping in mind where the radio is to be mounted and other factors:
a Whenever possible, avoid routing the cable above the catalytic converter.
b Make sure that the power cable never rests on sharp edges.
c Use grommets whenever a cable has to pass through a hole in a metal panel.
Caution: Improper handling with the power cable may cause shorting to ground. Ensure that during
radio installation the power cable fuse is removed.
Caution: Make sure that your power cable is not placed with the antenna in parallel. Interference can
cause radio to hang.
2 Locate an existing hole with the grommet in the vehicle fire wall, or use a 9.5 mm (3/8-inch) bit to drill an access
hole in the fire wall. Install a grommet with a 5 mm (3/16-inch) inside diameter into the hole to protect the power
cable.
Caution: Be careful not to damage existing wires.
3 From inside the vehicle, feed the red and black leads (without the lugs attached) through the access hole and into
the engine compartment.
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