Dash Mounting 13
8. Connect the power cable red lead from the fuse holder to the positive (+) battery
terminal. Make sure the adaptor cable is connected to the main power cable red lead.
9. Plug fuse into in-line fuse holder (see Figure 11).
Failure to mount the red lead of the power cable kit directly to the battery may result in
severe alternator whine interference.
Figure 11 Power Cable Assembly
Microphone Installation
See the instructions supplied with the microphone for complete installation information.
When connecting the various microphones available, make sure to attach the “S Hook”
provided on the microphone cable to the trunnion.
Speaker Installation
Introduction
The MTM300 ships standard with the external speaker. The speaker is supplied with an
accessory plug already attached to its cable and a strain relief clip which is threaded over
the cable between the speaker and accessory plug.
Speaker Installation
1. Ensure that the place where you are going to install the speaker is within user’s reach
and that the speaker will not obstruct vehicle operation.
2. Loosen the two wing screws of the trunnion bracket and remove the speaker.
3. Using the trunnion bracket as template, mark the locations of the three mounting
holes.
4. Centerpunch and drill a 4 mm Ø hole at each location.
5. Mount the trunnion bracket with the screws supplied (see Figure 12).
Note
Fuse
Cover
Red Lead
Red Lead
Mounting
Hole
Molded In-Line
Fuse Holder
To Vehicle
Chassis Ground
Engine
Compartment
To Battery (+)
Adapter
Firewall
Red Lead
Black Lead
Ring
Lugs
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