Installing a Tachometer - Lund Help?

[Twinsfish]

Looking for some help hooking up a tachometer. I have a 94 Mariner 4cyl. 40hp tiller outboard. I picked up a OEM "Lund" Tachometer but didn't receive any documentation with it. I'd like to get it right the first time without any trouble. Hopefully someone can help!

There are 3 terminals on the back of the tach.

IGN = 12v from the ignition switch
GND = Ground
SEND = ??? Where do I find the wire on the motor to hook up to??

And also there is a switch with various settings, which setting for the motor I have?

Thanks in advance!

Bill

[REW]

Most of the tachs work off the motor alternator.
The settings on the tach, are for selecting the number of poles on the alternator.

Since I am not familiar with that particular motor, I would suggest that you call a dealer who has a mechanic that is familiar with that motor. He should be able to tell you what wire, color location, etc. that needs to be connected the tach. He should also be able to tell you the number of poles.

Once you have the wire connected - you can probably experiment with the number of poles switch. This swich will simply change the calibration on the tach - basically your motor is going to be idling at a speed a bit less than 1000 probably 600 - 800 rpm.

The wide open speed is going to be somewhere around 5000 - 6000 rpm.

Generally, switching the number of poles swictch, has obviously correct / or incorrect settings.

Check to be sure.

Take care
REW
p.s.
I don't know if you said or not, but if you have a remote throttle / shift on this motor - the tach wire, is often brought forward to the help position, and is often accessed by a simply plug in connector into the throttle box.

[REW]

Perhaps, this diagram will help?

It looks like it needs to be hooked to the gray wire on the motor - off the alternator - which comes out from under the flywheel.

And, it looks like the number of poles switch should be set to 6.



Take care
REW


INBOARD, STERN DRIVE, AUTOMOTIVE INSTALLATION
(FIGURE 2):
1. Run a wire from the ‘GND’ (Ground) terminal of the gauge to
electrical system ground.
2. Run a wire from the ‘LT’ (Light) terminal of gauge to the panel
light switch, or the 'LT’ terminal of another gauge.
3. Run a wire from ‘IGN’ terminal of gauge to ‘IGN’ terminal of
ignition switch or the 'I’ terminal of another gauge, or other
switched power source.
4. Connect a wire from the tachometer's ‘SEND’ (Sender)
terminal to the ‘-’ (Minus) terminal of the engine's ignition coil or
tachometer output of electronic ignition power pack.
5. Set Tachometer's rotary Selector Switch to "C" position
number as number of engine's cylinders. (See Application
Chart, Page 4). Proceed to "AFTER INSTALLATION CHECKOUT"
OUTBOARD INSTALLATION:
If your Engine's throttle /shift control box is furnished with
a plug-in socket, harnesses are available to simplify
installation. For Evinrude/Johnson prior to 1996 (3 Pin
socket), use P/N IH14767. For Mariner/Mercury (5 Pin
socket), use P/N IH15105. See Instructions packed with
harness (if used) as well as the following.
A. If harness is not used, run a wire from the 'GND' (Ground)
terminal of gauge to electrical system ground for all installations
(except for Honda, Suzuki and Yamaha).
B. Run a wire from 'LT’ (Light) terminal of gauge to panel light
switch, or the 'LT' terminal of another gauge.
C. Run a wire from 'IGN’ terminal of gauge to 'IGN’ terminal of
ignition switch, the 'I' terminal of another gauge, or other
switched power source.
READ AND FOLLOW THESE INSTRUCTIONS CAREFULLY
BEFORE PROCEEDING WITH INSTALLATION
CAUTION:
DO NOT DEVIATE FROM WIRING INSTRUCTIONS. INCORRECT
INSTALLATION COULD CAUSE ELECTRICAL SHORT
WITH POSSIBLE FIRE. ALWAYS DISCONNECT BATTERY
BEFORE MAKING ANY ELECTRICAL CONNECTIONS.
THIS TACHOMETER (OR TACHOMETER/HOURMETER) IS
DESIGNED TO OPERATE ONLY:
A. IN 12 VOLT DC SYSTEMS (For use in 24 vdc systems,
order Voltage Reducer P/N 50446P004)
B. ON INBOARD AND STERN DRIVE FOUR-CYCLE GAS
ENGINES WITH STANDARD IGNITION OR FACTORY INSTALLED
ELECTRONIC IGNITIONS, (except as noted in
Section 1 of Application Chart, Page 4).
C. OR ON OUTBOARD ENGINES (2 & 4 CYCLE) WITH
ALTERNATORS HAVING 4, 6, 8, 10, OR 12 MAGNETIC POLES
(See Section 2 of Application Chart, Page 4). If your brand or
model is not listed, contact your dealer for assistance.
NOTE: Engine designs are subject to change. All data shown
is based on latest information available at time of publication.
Teleflex assumes no responsibility for its correctness, or
misapplication of its products.
NOTE: VARIOUS STANDARD-MAKING ORGANIZATIONS
HAVE ESTABLISHED RULES FOR WIRING. THOSE APPLICABLE
TO YOUR APPLICATION SHOULD BE FOLLOWED.
ADDITIONAL SUPPLIES NEEDED FOR INSTALLATION:
1. No. 16 Stranded insulated wire
2. Insulated terminal lugs
GAUGE INSTALLATION
1. If there is no hole available in your dash, select a mounting
position for the gauge which provides easy readability from the
operator's position. Check behind Mounting Panel for installation
clearance.
2. Depending on gauge model, cut a 3-13/32" (87 mm) or 4-5/8"
(117 mm) diameter hole through the panel at the desired
location.
3. Insert gauge through the hole, and secure with ''U"-shaped
bracket, using nuts and washers supplied. See Figure 1. Legs
of bracket may be shortened if required.
CAUTION: DO NOT OVER TIGHTEN NUTS, OR YOU MAY
CRACK THE GAUGE HOUSING OR THE MOUNTING PANEL
TACHOMETER/ TACHOMETER-HOURMETER INSTRUCTIONS
(OUTBOARD ALTERNATOR AND GASOLINE FUELED 4-CYCLE AUTOMOTIVE, STERN DRIVE OR INBOARD ENGINES)
99320 Rev. 5 2/01
OUTBOARDS
STERN
DRIVES
INBOARDS
(GAS)
AUTOMOTIVE
FIGURE 1
Continued on page 2
Manufactured by:
Teleflex inc. (USA)
6980 Professional Pkwy East
Sarasota, FL 34240-8414
Phone (941) 907-1000
FAX (941) 907-1020
www.tflx.com
2P
CAUTION: DISCONNECT BATTERY
BEFORE MAKING CONNECTIONS.
FIGURE 2
B
ST
I
IGNITION
SWITCH
SYSTEM GROUND
0 volts DC
continuity
12-16 volts
PANEL
LIGHT
SWITCH
TO
POSITIVE (+)
LIGHT
MOUNTING
STUD
CALIBRATION
ADJUST
LT
GRD
IGN SEND
3P
4P 5P
6P 8C
6C
4C
CAL
RANGE
SELECTOR
5-7 volts DC (except
electronic ignition)
(-) (+)
COIL
DISTRIBUTOR
W/ ELECTRONIC
IGNITION
ELECTRONIC
IGNITION
MODULE
TO TACHOMETER
(OPTIONAL)
TACHOMETER
TERMINAL
4-CYCLE TACHOMETER
4C, 6C, 8C POSITIONS
PAGE 2
Continued on page 3
Attachment of the sender wire varies with Engine brand. See
Section pertaining to your engine, and Figure 3. If your engine is
not shown, contact your dealer for assistance.
EVINRUDE, JOHNSON OUTBOARDS, OMC SEADRIVE AND
JET ENGINES
Check Dash end of engine wiring harness for a Gray or Gray/
Yellow wire (may be inside Control Box). If present, make sure
engine end is connected to alternator at terminal strip on
powerhead, not to Ignition system. Connect end nearest to
dash to 'SEND’ (Sender) terminal of tachometer.
If Gray or Gray/Yellow wire is not present in harness, locate Gray
or Gray/Yellow wire on terminal strip on engine powerhead.
Connect a wire from 'SEND’ (Sender) Terminal on tachometer
to Gray or Gray/Yellow wire on terminal strip. Set Selector Switch
on tachometer as shown in Application Chart on Page 4.
Proceed to "AFTER INSTALLATION CHECKOUT"
MARINER/MERCURY OUTBOARD ENGINES
Check Dash end of engine wiring harness for a Gray wire (may
be inside Control Box). If present, make sure engine end is
connected to alternator at terminal strip or rectifier on powerhead,
not to Ignition system. Connect dash end to 'SEND'
terminal of tachometer. If Gray wire is not present in harness,
locate Voltage Rectifier on engine powerhead. Connect a wire
from tachometer 'SEND’ (Sender) terminal to either Yellow
terminal on Rectifier. Set Selector Switch on tachometer as
shown in Application Chart on Page 4. Proceed to "AFTER
INSTALLATION CHECKOUT"
FORCE/CHRYSLER OUTBOARD ENGINES
NOTE: THIS TACHOMETER WILL NOT WORK ON MAGNAPOWER
I ENGINES, OR THOSE MODELS WITH 20 POLE
(PRESTOLITE) ALTERNATORS. CONTACT YOUR TELEFLEX
DEALER FOR ASSISTANCE. Late models with 12 pole
alternator - Same as Mariner/Mercury . See Application Chart on
Page 4.
HONDA OUTBOARDS
Locate Gray, Black/yellow, and Black wires in Control Box.
(Some engines include an Instrument Harness from Control
Box to Dash area for easier wiring.) Use additional wire as
needed to connect as follows:
Connect Gray wire to Tachometer's 'SEND’ (Sender) terminal.
Connect Black wire to the Tachometer's 'GND’ (GROUND)
terminal.
Connect Black/yellow wire to Tachometer's 'IGN' (IGNITION)
Terminal.
Set Selector Switch on tachometer as shown in Application
Chart on Page 4. Proceed to "AFTER INSTALLATION CHECKOUT".
SUZUKI OUTBOARD ENGINES
It is recommended that the tachometer signal connections be
made inside the Control Box. Remove three screws from the
rear of the Control Box and remove back cover plate. Locate the
Yellow and the Black wires inside the Control Box. Connect a
wire from the tachometer's 'SEND’ (Sender) terminal to the
Yellow wire. Connect a wire from the Black wire in the Control
Box to the tachometer's 'GND’ (GROUND) terminal. Keep wires
in the Control Box away from all moving parts in Control and
reinstall back cover plate. Set Selector Switch on tachometer as
shown in Application Chart on Page 4. Proceed to "AFTER
INSTALLATION CHECKOUT".
TOHATSU/NISSAN OUTBOARD ENGINES
Check Wiring Harness inside Control Box for a Yellow wire.
Connect to Tachometer's 'SEND' (Sender) terminal. If Yellow
wire is not present, check terminal strip on engine powerhead
and locate Yellow or Yellow/Gray wire from alternator. Run a wire
from Yellow or Yellow/Gray wire on terminal strip to tachometer's
'SEND' (Sender) terminal. Set Selector Switch on tachometer as
shown in Application Chart on Page 4. Proceed to "AFTER
INSTALLATION CHECKOUT"
PAGE 3
Continued on page 4
CALIBRATION AND ADJUSTMENT:
The tachometer is factory calibrated to within +/- 3% Full Scale
accuracy. Field calibration should not be necessary, but provision
has been made for finer adjustment at a commonly used
RPM, or for synchronization of twin installations. To verify
Selector Switch Setting, or to fine-tune the adjustment will
require use of a remote Master Tachometer.
1. Attach Master Tachometer to engine to obtain true RPM
reading. With engine running, adjust throttle to mid-range
RPM.
2. Insert a small blade screwdriver into Calibration hole in
rear of tachometer case. Carefully rotate adjustment until
tachometer reading matches Master Tachometer. Turning
clockwise increases RPM.
NOTE: ADJUSTMENT NEEDS ONLY MINIMAL TURNING
TO AFFECT TACHOMETER READING. DO NOT FORCE
ADJUSTMENT OR YOU WILL DAMAGE THE
TACHOMETER.
3. In Twin engine installations, synchronize engines at midrange
by Master Tachometer, and use Calibration procedures
as above until tachometer readings match.
TROUBLE SHOOTING ADVICE
1. Be certain all wires are connected properly. Tachometer is
protected electronically if wires are connected incorrectly.
2. Be sure all connections are bright (clean) and tight.
3. If tachometer does not 'zero' when power is turned on, the
positive (IGN) and/or ground wires are not connected properly.
Tachometer must zero when powered. When measured with a
volt/ohmmeter, the power (IGN) to ground (GND) voltage must
be 12-16 volts DC with the ignition on. If tachometer goes to
zero and then refuses to track RPM it may indicate the voltage
YAMAHA OUTBOARD ENGINES
Locate Green and Black wires on underside of Shift Control Box.
Connect a wire from the tachometer's 'SEND’ (Sender) terminal
to the Green wire. Connect a wire from the tachometer's 'GND’
(GROUND) terminal to the Black wire.
If the Green wire is not accessible at the Control box, run a wire
from the tachometer 'S’ (SEND) terminal to either Green wire on
the terminal strip located on the engine's powerhead. Connect
the tachometer's 'G’ Terminal to any common ground in the
electrical system. Set Selector Switch on tachometer as shown
in Application Chart on Page 4. Proceed to "AFTER INSTALLATION
CHECKOUT"
AFTER INSTALLATION CHECKOUT:
CAUTION: MAKE SURE THAT ELECTRICAL WIRING IS
DRESSED AWAY FROM MOVING OR HOT ENGINE
COMPONENTS.
CAUTION: BEFORE RECONNECTING BATTERY, RECHECK
WIRING TO BE SURE ALL CONNECTIONS ARE PROPERLY
MADE. INCORRECT CONNECTIONS OR ELECTRICAL
SHORTS COULD CAUSE DAMAGE OR FIRE IN SYSTEM.
ELEMENTS OF ELECTRICAL SYSTEM SHOULD HAVE
PROPER FUSES INSTALLED.
1. When wiring is completed, Connect Battery.
2. Turn Ignition Switch 'On’. Tachometer Pointer must move to
Zero position. (Models with Hourmeter - also should "click" and
the indicator wheel advance every 3.6 seconds) If not, check
wiring connections.
3. Start engine and check for proper operation. Tachometer will
read too high if Selector Switch is set too low, or read too low if
Switch is set too high.
4. When Ignition is turned off, pointer may come to rest anywhere
on the dial.
2P
CAUTION: DISCONNECT BATTERY
BEFORE MAKING CONNECTIONS.
FIGURE 3
B
ST
I
IGNITION
SWITCH
SYSTEM GROUND
0 volts DC
continuity
12-16 volts
PANEL
LIGHT
SWITCH
TO
POSITIVE (+)
LIGHT
MOUNTING
STUD
CALIBRATION
ADJUST
LT
GRD
IGN SEND
3P
4P 5P
6P 8C
6C
4C
CAL
RANGE
SELECTOR
5-7 volts AC
at 2000 RPM
OUTBOARD TACHOMETER
2P, 3P, 4P, 5P, 6P POSITIONS
BLACK
YELLOW
OR GREEN
(WIRES MAY
BE INSIDE
CONTROL)
HONDA
NISSAN
SUZUKI
TOHATSU
YAMAHA
TACHOMETER
FORCE
YELLOW
YELLOW
RED
RED
YELLOW
YELLOW/GRAY
GRAY
MARINER
MERCURY
EVINRUDE
JOHNSON
TACHOMETER APPLICATION CHART
This Tachometer is Suitable for use with engines listed
below. If your Make/Model is not shown, consult your Dealer
4- CYCLE GAS AUTOMOTIVE; MARINE INBOARD, & I/O ENGINES:
All with standard or factory electronic ignition; except Indmar LT-1,
and early (1960's) Mercruisers with Thunderbolt Series 1 ignition.
OUTBOARD ENGINES (Alternator Equipped Models only)
ALT. SWITCH
MAKE/MODEL POLES POSITION
CHRYSLER:
35, 70 HP & up (1968-1983) 12 6P
55, 60 HP (1968-1983) with 20-pole alternator* 20 *
EVINRUDE**/JOHNSON**/OMC SEADRIVE/:
9.9, 15 HP (2 cylinder, 4 stroke) 12 6P
50, 55 HP electric start (2 cylinder 1971-1977) 12 6P
55-60 HP, 4-12 amp alternator (2 cyl 1978-1991) 12 6P
Less than 70 HP (2 cylinder, 2 stroke) 10 5P
70 HP & up (& all 3 cylinder);all OMC Sea Drives 12 6P
FORCE (U.S. MARINE):
35 HP (1986-date), 40 HP (1993-date) 12 6P
50 HP through early 1987 (A,B models) 8 4P
50 HP ('87 C model & newer);
85, 125 HP (through '89)* 20 *
50 HP (1992 Revision ‘B’ & newer);70 HP ('91-date) 12 6P
90-120 HP (prior to 1991 Revision ‘H’)* 20 *
90-120 HP (1991 Revision ‘H’ & newer) 12 6P
150 HP (prior to 1991 Revision ‘B’)* 20 *
150 HP (1991 Revision ‘B’ & newer) 12 6P
L-Drive, 85, 125 HP (1989 Models)* 20 *
L-Drive, 90-120 HP (prior to 1991 Revision ‘B’)* 20 *
L-Drive, 90-120 HP (1991 Revision ‘B’ & newer) 12 6P
L-Drive, 145 HP (1991-date) 12 6P
HONDA:
35/40/45/50 HP with alternator 6 3P
All Other Models with Alternator 4 2P
MERCURY***/MARINER***:
(2-stroke) 6 thru 25 HP (U.S. Origin) 8 4P
(4-stroke) 8 and 9.9 HP 6 3P
(2-stroke) 30/40 HP, USA Serial 0G53314 and up 12 6P
(2 cylinder) 35 and 40 HP, USA serial # 582399 and up 8 4P
Canada serial # 7169337 and up 8 4P
Australian serial # 8070639 and up 8 4P
Belgium serial #9298955 8 4P
(4-stroke) 25 thru 90 HP 12 6P
(2-stroke) 45 HP thru V6 (U.S. Origin) 12 6P
SUZUKI:
9.9, 15 HP (2 cylinder, 4 stroke) 6 3P
25, 30 HP (1993-date); 55, 65 HP (1985-date) 6 3P
All under 55 HP; 50-60 HP Cabrea models 4 2P
60 & 65 HP (1984 & older) 4 2P
75 HP & up (1985-date); 75 HP & up Cabrea 12 6P
115 HP & up (1988-date) 12 6P
TOHATSU/NISSAN:
All 2 Cylinder models with alternator thru 70 HP 4 2P
All 3 cylinder models 6 3P
90 HP (through 1994), 120, 140 HP (through 1989) 6 3P
120, 140 HP (1990-date), all other 4 cylinder 12 6P
YAMAHA:
6-25 HP (2 cylinder, 2 stroke) 4 2P
F/T 9.9, 15 HP (4 stroke); 25-70 HP (3 cylinder);
90 HP (thru 1985) 6 3P
F/T 50 HP (4 stroke); 75 HP & up (2 stroke) 12 6P
PAGE 4
rectifier is not operating properly (even though the rectifier may
be partially charging the battery). The rectifier should be
checked for proper operation by a trained service technician.
4. If tachometer reads too high or too low RPM, the black rotary
selector switch is not in the correct position. Refer to Chart.
Changing switch positions while the engine is running will not
damage the tachometer or engine. If the switch is between
positions (not making contact), the pointer will go to the high
end of the scale.
5. Connect a volt/ohmmeter to SEND and GND connections on
the rear of the tachometer. With the engine at approximately
2000 RPM, it should read about 3-7 volts AC on an outboard
engine, or about 5-6 volts DC on an automotive, stern drive or
inboard engine. This will confirm the presence or absence of a
signal at the tachometer.
6. Rotary switch positions 4C, 6C, and 8C are for four-cycle
(gas) automotive, stern drive or inboard engines. Rotary switch
positions 2P through 6P are for 2/4 cycle outboard engines
equipped with alternators.
Additional Information for Evinrude/Johnson engines:
1. If tachometer does not work properly on the Gray wire on
engines with water cooled voltage regulator, bypass the
regulator and attach to yellow/gray wire from the alternator to the
rectifier.
2. On occasion, the engine's main ground terminal (from main
battery ground to the engine) has paint residue and does not
make a proper ground. The nut, washer, and all connections
should be removed, cleaned with a wire brush, and reassembled.
3. Some Evinrude/Johnson 48 (50), 88 (90), & 112 (115) "Spl"
engines may require the addition of a 1/2 watt (or larger), 2000
ohm resistor, connected between the Tachometer's "Send"
and "Ground" terminals. If the pointer drops back to "0" as the
engine accelerates (around 3500 RPM), the resistor is needed.
Replacement 12 Volt Light Bulb (with wedge base socket):
Teleflex Part Number - IA62995
If you require Technical Assistance or Warranty Replacement on
this Product, contact your Dealer, or Teleflex Technical Service.
* Requires special tachometer for 20 pole alternator. Ask your dealer for
Part Number 53743P.
** 88-115 HP “Special” models may require addition of an OMC Voltage
Regulator to the engine, or a 2,000-ohm (or larger) resistor to the rear of
the tach.
*** Some Mariner/Mercury 30 & 40 HP (2 cylinder) non-USA built engines
may require a Module (Mercury P/N 17461A2) when using any of these
tachs.
NOTE: Engine designs are subject to change. Data above is based on
the latest information available at the time of publication. Teleflex
assumes no responsibility for its correctness or the misapplication of its
products.

[MarkG]

Maybe you should consider returning the Lund tach and purchase the Merc tach that goes with that tiller motor. If its anything like the Yamahas,there may already be connectors in the Mercs wiring harness that will make it a simple task. Something to look in to. However,maybe calling Lund directly,since it is their product,may be able to help. Maybe they can fax you a wiring schematic.

[T-Mac]

It's just teleflex tach. Lund had them put their LUND logo on it.

[Twinsfish]

Just the information I was looking for!

Thanks Again!

[T-Mac]

Ol' REW pretty well covered all the scenarios...huh?
:)
Whew!

[Twinsfish]

Yes, REW came thru as always but I thought maybe Tmac would have beat him to it! LOL! You guys sure are a wealth of information!