
Description: Part Number:
Tachometer
99105-80000/80100
Contents
Applications: Installation Time:
NOTE: Weight:
Suzuki Marine Boats 1 HRS
Mounts in standard 3 3/8" hole.
1 lbs
Ref. Part Number  Description QTY
1. 99105-80000/80100  Tachometer  1
2. BC0146  Mounting Bracket  1
3. Mounting Hardware    1
0
7
-
-
1
1
3
7
2
A
4
3
20
10
0
30
RPM
x 100
40
50
60
70
1
1
Tools 
Required
Important
NOTE
IS0173B ECR5609 8/2005
2
Ref.
Tools Description
1.  3/8" Nut Driver
2.  Suzuki Terminal Kit  09900-28701
Please read this manual and follow its instructions 
carefully. To emphasize special information, the 
symbol    and the words WARNING, CAUTION 
and NOTE have special meanings. Pay special 
attention to the messages highlighted by these signal words:
NOTE: Indicates special information to make 
maintenance easier or instructions clear.
3
If so equiped
YELLOW
BLACK
GRAY
Indicates potential hazard that could 
result in death or injury.
Indicates potential hazard that could 
result in vehicle damage.

Installation
Disconnect battery during installation.
Tighten nuts on backclamp only slightly more than you can tighten with your fingers. 
Six inch-pounds of torque is sufficient. Over tightening may result in damage to the 
instrument and may void your warranty. 
Gasket cement or other adhesive is not required to secure tubing to fittings.
1.
 Location: The tachometer should be located at least 
18” from a magnetic compass. Some interference (erratic 
operation) 
transmissions. This will neither damage a Faria tachometer 
nor affect accuracy when not transmitting.
may be noticed on the tachometer during radio 
Mounting Hardware Kit
A
x 5
2.  It is recommended that you use the included color 
coded wire extension leads.
3. Using a small screwdriver, SLIGHTLY depress and 
turn the selector switch on the back of the tachometer to the 
correct 
alternator 
Depressing the switch too hard 
tachometer! Be sure the selector switch has locked into the 
detent at the correct position by slightly rotating the switch 
back and forth with the screwdriver. If the number of poles 
is 
Application” chart or call Faria 
848-9271 with make, model, HP, and year of the motor.
4.
tachometer with the backclamp supplied.
5. 
connector, slide the connector over the three instrument 
studs. 
connected to the gray, yellow, and black wires of the 
engine harness.
 position to match the number of poles in the 
 (see label on the side of the tachometer). 
may cause damage to the 
 not known, consult the “Outboard Tachometer 
 Cut a 3-3/8” dia hole in the dash and mount the 
If this gauge kit has been supplied with a three prong 
 Be sure the gray, yellow, and black bullets are 
®
 Marine Instruments at (860) 
main 
6. Connect the gray extension lead stud connector to the 
positive (+) post of the tachometer and 
into the gray wire of the main engine harness.
 plug the bullet end 
7
B
C
Figure 
1
If so equiped
YELLOW
K
BLAC
GRAY
positive 
circuit and the bullet end to the boat  lighting 
circuit. No separate ground is required for the 
lighting. Reconnect the battery.
 “+” side of the instrument lighting 
x 
x 2
C
A
B
7. Connect the yellow extension lead stud connector to 
the signal (SIG) post terminal of the tachometer and  plug 
the bullet end into the yellow wire of the main engine 
harness.
8. 
Connect the black extension lead stud connector to 
the negative (-) post of the tachometer and plug the bullet 
end into the black wire of the main engine harness.
**(WHEN 
CONTROL IS USED, THE YELLOW TACH SIGNAL, 
SWITCHED 
WIRES CAN BE FOUND AT THE CONTROL BOX.)
 A STANDARD SIDE MOUNT REMOTE 
 POWER GRAY AND BLACK GROUND 
9. Connect the GREEN/ORANGE extension lead to the 
blade terminal adjacent to the twist-out light assembly to the 
NOTE: 
A.) To change light bulb, twist black socket 
assembly one-eighth turn counterclockwise 
until it pops out.  Bulb pulls straight out of 
assembly.  It is a GE No. 194 instrument 
lamp. 
B.) If your Tachometer is equipped with an 
hourmeter, the hourmeter will be energized 
when the engine is running. 

Harness 
Diagram
Gray
llow
Ye
Gray
Ye
Black
HN0412 rev A ecr 5609 8/05 
llow
Heat shrink tubing
Green/Orang
Green/Orang
Yellow
Black
Blac
kBlack
Gray
Gray
e
eGreen/Orange
Trouble 
Shooting
Trouble Inspection Diagnosis Action
Gauge Sticks 
A. Backclamp may 
   be too tight.
1. Slightly loosen nuts 
  holding backclamp. 
  Check operation.
1. If gauge works and is 
  not loose in panel, continue 
  using gauge.
2. If gauge continues to 
  stick, replace gauge.
Gauge 
Inoperative
A.   
Is power applied to 
gauge?
1. 
Switch the 
instrument power 
supply switch on and 
off. As power is 
supplied the pointer 
should jump slightly.
1. 
Check wires to 
check they were 
installed on the 
correct terminals and 
power is actually 
supplied to gauge.
2 
If pointer jumps 
(indicating power 
supplied), check for 
signal from engine. If 
signal exists, replace 
tachometer.
Trouble shooting continued next page.

Outboard 
Tachometer 
Application 
Chart
Gauge 
is Erratic
A.   
1. 
1. 
Check for insulation 
that may have been 
pushed into connection.
Fix connection. 
Inspect the connection 
between the wire and 
the ring connector.
B.   
1. 
1. 
Check wires by 
connecting one wire 
at a time to the 
tachometer directly 
from the battery or 
the signal source on 
the engine.
Relocate offensive 
appliance. Please 
refer to installation 
instructions.
Check for excessive 
electrical noise caused 
by an electrical 
appliance set to close 
to the gauge. i.e. a 
magnetic compass, a 
radio transmission.
C.   
1. 
1. 
Check the switch on 
the back of the 
tachometer. Refer to 
chart on the next 
page. 
If the tachometer 
reads to high, then 
the switch is 
selected too low. 
2. 
If the tachometer reads 
too low, then the switch is 
selected too high. 
A reading of Hi or 
Low may be the 
cause of alternator 
pole switch not 
selected correctly.
Trouble 
Shooting
All Suzuki 4-strokes, 
DF40 and larger, will 
require a Tach/System 
Monitor or 2" System 
Monitor gauge to 
properly indicate any 
warning or diagnostic 
event. 
Make/ Year                            Model          # of Poles.
Tr
ouble
Inspection Diagnosis Action
Suzuki 
through 2006
Less than 55 HP - All 
60 HP, 65 HP thru 1985
4
50 - 60 HP Cabrea 
DF 4 through 30 
25 HP & 30 HP (1993 & later)
6
55 HP & 65 HP (1985 & later) 
75 HP & up (1985 & later) 
75 HP and up (Cabrea)
115 HP and up (1988 & later)
12
DF 40 through DF 250, DFV6 
(4 stroke)
(4 stroke)