5
Chapter 3
Trunnion Installation
3.1 Planning the Mounting Trunnion Installation
Planning is the key to fast, easy radio installation. Before a hole is drilled or a wire is run, inspect the
vehicle and determine how and where you intend to mount the antenna, radio, and accessories. If you
are using any of the optional accessories, obtain them and plan for their installation using the detailed
instructions included with each accessory. Plan wire and cable runs to provide maximum protection
from pinching, crushing, and overheating.
The mounting trunnion allows the radio to be mounted to a variety of surfaces.
1. Ensure the surface can support the weight of the radio.
2. Although the mounting trunnion can be mounted to a plastic dashboard, it is recommended that
the mounting screws be located so they penetrate the supporting metal frame of the dashboard.
3.2 Trunnion Installation Procedure
1. Select either the transmission hump or an open underneath portion of the dash to mount your
radio. (See Figure 3-1.) When mounting the trunnion on the transmission hump, be careful that
the transmission housing is not affected.
2. Use the trunnion mounting bracket as a template to mark the hole positions on the mounting
surface. Use the innermost three holes for a curved mounting surface, such as the transmission
hump, and the four outermost holes for a flat surface such as under the dash.
3. Center-punch the spots you marked and use a 5/32-inch (4 mm) bit to drill a hole at each location.
4. Secure the trunnion mounting bracket to the mounting surface with the four self-tapping screws
provided. (See Figure 3-1.)
5. Attach the radio to the trunnion mounting bracket using two thumbscrews (Figure 3-2.)
6. If using a Locking Trunnion, lock the radio into the mounting bracket by closing the locking bracket
and locking the cage using the key provided (Figure 3-3.)
CAUTION: The locking bracket (RLN4779) is NOT recommended for overhead mounting
applications.
To Next Page
Loading...
Need help?
General
