Wire Color | Stripe Color | Color Code | Where Used | Notes | Examples |
Black
|
|
B
|
Ground on Negative Ground Machines
|
Most machines are positive ground and have no black wires. However, some harnesses (probably after-market) used black instead of red! On some Triumphs, the horn to ground was Black. On Triumphs with a horn relay, the relay to horn wire was Black and the horn ground wire was also black.
|
|
Black
|
|
B
|
Voltage Regulator Negative Output
|
PODtronics, Tri-Spark MOSFET, and most others
|
|
Black
|
Red
|
BR
|
Contact Breaker to Center Cylinder's Coil, Triples
|
|
|
Black
|
White
|
BW
|
Contact Breaker to Timing Side Cylinder's Coil, Twins/Triples
|
On singles, this is the Contact Breaker to Coil wire.
|
|
Black
|
Yellow
|
BY
|
Contact Breaker to Drive Side Cylinder's Coil, Twins/Triples
|
|
|
Green
|
|
G
|
Dynamo Field
|
Only on Magneto machines
|
|
Green
|
Black
|
GB
|
Stator Low Output (RM19), One Leg (RM24)
|
|
|
Green
|
Red
|
GR
|
Lefthand Turn Signal
|
|
|
Green
|
White
|
GW
|
Righthand Turn Signal
|
|
|
Green
|
Yellow
|
GY
|
Stator High Output (RM19), One Side (RM21), One Leg (RM24)
|
On Norton, also goes to the Warning Light Assimlator
|
|
Light Green
|
Brown
|
LGN
|
Turn Signal (Direction) Switch (Handlebar) common to Flasher Unit
|
|
|
Brown
|
|
N
|
Stop Light
|
|
|
Brown
|
Black
|
NB
|
Horn button to horn (See PB Below)
|
Triumph "usually" used this for the horn. Some used PB
|
|
Brown
|
Green
|
NG
|
Taillight, Pilot Light, Speedo & Tach Illumination
|
|
|
Brown
|
Blue
|
NU
|
Battery to Ignition Switch if no Ammeter or Battery to Ammeter and see NW
|
|
|
Brown
|
White
|
NW
|
Ammeter to Ignition Switch
|
I use 14 gauge wire for this and NU
|
|
Purple
|
Black
|
PB
|
Horn button to horn (See NB Above)
|
As far as I know, this color was always used on Norton
|
|
Red
|
|
R
|
Ground on Positive Ground Machines
|
Some harnesses replaced this with black, but that is not common.
|
|
Red
|
Black
|
RB
|
Lighting Switch to Pilot Light
|
On later bikes, this was changed to Brown/Green so the pilot light was on whenever the tail light was on
|
|
Red
|
Green
|
RG
|
Oil Pressure Switch to Oil Pressure Indicator (Red)
|
Triumph before KE00001, after see WN
|
|
Blue
|
|
U
|
Light Switch (Headlight) to Dip Switch (Handlebar)
|
Some Norton harnesses also use Blue instead of the Blue/Yellow from the headlight switch to the ignition switch
|
|
Blue
|
Red
|
UR
|
Dip Switch (Handlebar) to Dip (Low) Beam
|
|
|
Blue
|
White
|
UW
|
Dip Switch (Handlebar) to Main (High) Beam
|
|
|
Blue
|
Yellow
|
UY
|
Ignition Switch to Headlight Switch
|
Some Norton harnesses use Blue for this instead. On Triumph, to stop confusion I use this from the switched side of the ignition switch to pin 4 of the 3-position headlight switch. Some Triumph diagrams have it as NB and some as NW - in either case that is confusing because they are primarily on the "hot" side of the switch.
|
|
White
|
|
W
|
"Hot" when the igniton is on.
|
Goes to each handlebar console, the brake switches, and if no kill button, the coils. See WY
|
|
White
|
Black
|
WB
|
Contact Breaker (Distributor) to Ignition Coil
|
Only on Magneto machines. Note: The Norton MKIII workshop manual wiring diagram incorrectly shows this instead of Black/White as the timing side contact breaker to coil wire.
|
|
While
|
Green
|
WG
|
Stator Common (RM19 & RM24), One Side (RM21)
|
On Norton MKIII this also goes to the Warning Light Assimulator
|
|
White
|
Brown
|
WN
|
Warning Light Assimulator to Charging Indicator (Red)
|
This is standard for a Norton but I remove the assimulator and install an oil pressure switch connected to this wire.
|
|
White
|
Brown
|
WN
|
Oil Pressure Switch to Oil Pressure Indicator (Red)
|
Triumph from KE00001 on
|
|
White
|
Purple
|
WP
|
Ballast Resistor to Ignition Coils
|
Norton
|
|
White
|
Red
|
WR
|
Starter Switch (Handlebar) to Starter Selenoid
|
Norton MKIII, Triumph T160
|
|
White
|
Blue
|
WU
|
Under tank junction to ballast resistor
|
Norton, See WY
|
|
White
|
Yellow
|
WY
|
Engine Kill (Handlebar)
|
Triumph Twins/Triples when no balast resistor is used: To coils.
Norton Commando, Pre-MKIII: To junction under tank where it connects to the White/Blue which connects to the balast resistor.
Norton Commando MKIII: To the balast resistor.
|
|
Yellow
|
|
Y
|
PODtronics single or three phase input from stator
|
|
|
Yellow
|
|
Y
|
Dynamo Output
|
Only on Magneto machines
|
|