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Northstar M121/M84 Installation and Operation Manual 93
There are two mounting arrangements:
Flush Mounting the M121/M84
1. Attach the flush mounting template to the
selected mounting position using adhesive
tape.
2. Drill a pilot hole for each of the hole saw
cuts shown on the template before cutting
the larger hole with the hole saw.
3. Next cut all the way around the inside of the
cut-out line with a saw to remove the waste
material shown on the template.
4. Check that the unit fits correctly in the cut
out area. Adjust the fit with a file if required.
5. Select a 2-3.5 mm 1/8” drill bit depending
on hardness of material to drill. Smaller
diameter holes will be needed for soft
woods and larger diameter pilot holes will
be required if mounting to hard materials
such as fiberglass (we recommend 3.5 mm
(1/8”) for fiberglass and Aluminum).
With the selected drill bit drill the 4 pilot
holes for the 8 gauge screws used to attach
the unit. These are indicated on the corners
of the mounting template.
6. Connect all cables to the rear of the unit
before placing the unit into the console.
7. Firmly secure the unit in place with the 4 x 8
gauge self tapping screws.
Note: the 5 x 14G self tapping screws are for
bracket mounting only.
8. To finish off the installation firmly clip the
front bezel in place.
Bracket Mounting the M121/M84
An alternative to flush mounting the M121/M84
is to bracket mount the unit. This method has
the advantage that the display can be easily
removed when it is not in use. The display may
be tilted for best possible viewing angle when
bracket mounted.
Note: The mounting bracket does not allow for
rotation of the unit to the left and right.
1. Use the mounting bracket as a template to
mark the 5 positions of the screw holes.
2. Select a suitable drill bit (note: larger
diameter pilot holes may be required if
mounting to fiberglass) and drill 5 pilot holes
in the marked positions.
3. Secure the mounting bracket using the 5 x
14G self tapping screws.
4. Slide the M121/M84 into the mounting
bracket and secure in place with the bracket
knobs.
5. To finish off the installation firmly clip the
front bezel in place.
Mounting bracket
Knob
14G self tapping screws
Bezel
8 gauge screws
M121/M84
M121/M84
Dash