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Thread: Yamaha 2 stroke tach question(s)
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05-05-2015, 04:04 PM #1
Yamaha 2 stroke tach question(s)
Pardon my ignorance:
There are three leads from the unit.
BLACK = neg?
GREEN = positive?
YELLOW = signal?
Three switch settings. 4P, 6P, or 12P. Does the "P" stand for 'poles' or 'pulses'?
(Tryin to make it work on 140 Xflow motor)'71 Glastron V153 - Composite rebuild - Unceremoniously wrecked
'81 Baja 15 SS - "nine-paged" '77 140
'81 Carlson C500 Metric - Currently in foster care
'70 something Speedcraft - Allison 16R clone - Undergoing restoration
'79 Carlson CVZ 19 - Far back burner
WALK TALL AND CARRY A BIG BILGE PUMP
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05-05-2015, 04:32 PM #2
Yellow should be power and green would be the tach signal. 12 pole setting if my memory serves.
Steve1993 Cougar 21ft MTR Superbender SHO
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05-05-2015, 04:34 PM #3
Yamaha wiring troubles.
YAMAHA COMMON WIRING COLOR CODES WIRE COLOR(S) FUNCTION COLOR
SAMPLEBLACK GROUND RED BATTERY POSITIVE; SW3 Oil warning red light V4 YELLOW Ignition ON 12-volts; Four-stroke lighting coil BLUE Instrument lights, choke, choke circuit,
Ground potential oil transfer, High speed Charge CoilGREEN Tachometer signal, lighting coil lead, knock sensor ORANGE Trim position sensor PINK Oil and overheat signal ground WHITE Ignition stop circuit, SW1 oil transfer off position V4 BROWN Start circuit Low speed charge coil; Positive "+" potential
to oil transfer pump; SW2 transfer on position V4GRAY Warning circuit lead; Over-rev control;
Four-stroke tachometerSKY BLUE Trim Up LIGHT GREEN Trim Down YELLOW-RED STRIPE Diagnostic lead from ECU PURPLE ECU groud to enrichment solenoid V76° BLACK/YELLOW STRIPE Thermo sensor BLACK/RED STRIPE Remote oil tank ground return, PBS to tachometer,
Low speed charge coilBLACK/WHITE STRIPE Ignition coil primary lead GREEN/BLUE STRIPE Crank position sensor GREEN/RED STRIPE Red oil warning light ground through SW3 in main tank oil
sensor to tachometerGREEN/WHITE STRIPE Crank position sender; Lighting coil lead to rectifier BLUE/GREEN STRIPE Main tank oil level sensor SW2 oil transfer circuit BLUE/RED STRIPE Main tank oil level sensor SW3. No oil warning circuit BLUE/WHITE STRIPE Main tank oil level sensor SW1; Oil transfer OFF circuit BLUE-YELLOW STRIPE Shift cut switch PURPLE-RED STRIPE OX66 #1 injector PURPLE/BLACK STRIPE OX66 #2 injector PURPLE/YELLOW STRIPE OX66 #3 injector PURPLE/GREEN STRIPE OX66 #4 injector PURPLE/BLUE STRIPE OX66 #5 injector PURPLE/WHITE STRIPE OX66 #6 injector RED/YELLOW STRIPE Key on power through fuel pump relay; power to ECU;
Fuel pump and fuel injectorsWHITE/RED STRIPE #1 pulser V6 WHITE/BLACK STRIPE #2 pulser V6 WHITE/YELLOW STRIPE #3 pulser V6 WHITE/GREEN STRIPE #4 pulser V6 WHITE/BLUE STRIPE #5 pulser V6 WHITE/BROWN STRIPE #6 pulser V6 YELLOW/WHITE STRIPE Electric fuel pump for electric carb system 1993 Cougar 21ft MTR Superbender SHO
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terror liked this post
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05-06-2015, 03:49 PM #4
Preciate it. Thanks!
'71 Glastron V153 - Composite rebuild - Unceremoniously wrecked
'81 Baja 15 SS - "nine-paged" '77 140
'81 Carlson C500 Metric - Currently in foster care
'70 something Speedcraft - Allison 16R clone - Undergoing restoration
'79 Carlson CVZ 19 - Far back burner
WALK TALL AND CARRY A BIG BILGE PUMP