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JB4 Port injection and Flex Fuel Analyzer
Wiring Guide |
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General Flex Fuel Installation Instructions
(V17): |
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Red wire: Connect to 12 volts switched, if you use 12 volts constant,
that's fine but install a fuse. |
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Black wire:
Connect to chassis ground. |
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White wire: This connection is optional, see
platform specific instructions below for integration with the JB4. If connecting to an Analog gauge, it must
accept a 0-5 volt input or a .5 to 4.5 volt input. |
|
NOTE:
White wire connection for ethanol analyzer is optional and does not
need to be connected to use the Bluetooth Fuel-It! app. |
|
NOTE:
Do not attempt to pair the ethanol analyzer to your mobile device,
just open the Fuel-It! app and select "CONNECT". |
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Acura |
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth
signal scaling to 100 |
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Alfa Romeo |
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Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 4 on JB4 DB25
connector (enable ethanol setup bit 0) |
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Aston Martin |
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|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
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Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
BMW |
E-Series |
N54 |
Port Injection Controller |
Power |
Red |
12V
switched |
Green connector in DME box, connect to either
orange wire |
|
Ground |
Black |
Chassis |
Shock tower |
|
RPM |
Purple |
Pin 21 on JB4 gray
connector |
As marked on the female connector |
|
TMAP |
Yellow |
Pin 9 on JB4 DB9
connector |
JB4 USB Cable or JB4 mobile connect kit required |
|
Signal |
White |
Pin 15 on JB4 DB25
Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V trigger |
Thick Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
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|
|
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Flex Fuel Analyzer |
Power |
Red |
12 volts |
Either orange wire on the green connector in the DME box is a good
source |
|
Ground |
Black |
Chassis ground |
Shock tower or ground point in engine bay |
|
Signal |
White |
Pin 15 on JB4 DB25
connector (enable ethanol setup bit 1) |
Alternate location: DB25 Pin 2
(enable ethanol setup bit 0) |
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Full Flex Fuel DME Integration |
Signal |
White |
Small
black DME connector pin 16
(enable JB4 ethanol setup bit 2) |
|
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
N55 (Requires updated JB4
2431 chip) |
Port Injection Controller |
Power |
Red |
12V switched |
Large red wire in black connector at back of
DME box |
|
Ground |
Black |
Chassis |
Shock tower or ground point in engine bay |
|
RPM |
Purple |
Dark gray/black
textured wire in DME box |
Alternate RPM signal is available on pin 9 of OBDII port |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 16 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V trigger |
Thick Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
|
|
|
|
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Large red wire in black connector at back of
DME box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground point in engine bay |
|
Signal |
White |
DB25 Pin 16 (enable
ethanol setup bit 1) |
Alternate location: DB25 Pin 3
(enable ethanol setup bit 0) |
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
BMW |
F-Series |
B46 & B48 |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground point in engine bay |
|
Signal |
White |
DB25 Pin 4 (enable
ethanol setup bit 0) |
JB4 firmware versions prior to V22 will enable bit 2 instead of 0 |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
N20 & N26 |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box or jump terminal
with fuse |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 14 (enable
ethanol setup bit 1) |
Alternate location: DB25 Pin 3 (enable ethanol setup bit 0) |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
N55 PWG (Requires
updated JB4 2431 chip) |
Port Injection Controller |
Power |
Red |
12V |
Attaches
to jump terminal with fuse assembly |
|
Ground |
Black |
Chassis |
Shock
tower |
|
RPM |
Purple |
Pin 3 of JB4 OBDII 4
pin connector |
Insert pin for purple wire
into slot below the green wire |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 16 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
|
|
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box or jump terminal
with fuse |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 16 (enable
ethanol setup bit 1) |
Alternate location: DB25 Pin 3 (enable ethanol setup bit 0) |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
N55 EWG |
Port Injection Controller |
Power |
Red |
12V |
Fuse
box or attach to jump terminal with fuse assembly |
|
Ground |
Black |
Chassis |
Shock
tower |
|
RPM |
Purple |
Pin 3 of JB4 OBDII 4
pin connector |
Insert pin for purple wire
into slot below the green wire |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 14 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V trigger |
Thick Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
|
|
|
|
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 14 (enable
ethanol setup bit 1) |
Alternate location: DB25 Pin 3 (enable ethanol setup bit 0) |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
B58 |
Port Injection Controller |
Power |
Red |
12V |
Fuse
box or attach to jump terminal with fuse assembly |
|
Ground |
Black |
Chassis |
Shock
tower |
|
RPM |
Purple |
Pin 3 of JB4 OBDII 4
pin connector |
Insert pin for purple wire
into slot below the green wire |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 14 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V trigger |
Thick Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
|
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Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 4 (enable
ethanol setup bit 0) |
JB4 firmware versions prior to V22 will enable bit 2 instead of 0 |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
N63TU |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 16 (enable
ethanol setup bit 1) |
|
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
S55 |
Port Injection Controller |
Power |
Red |
12V |
Fuse
box or attach to jump terminal with fuse assembly |
|
Ground |
Black |
Chassis |
Shock
tower |
|
RPM |
Purple |
Pin 3 of JB4 OBDII 4
pin connector |
Insert pin for purple wire
into slot below the green wire |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 14 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V
trigger |
Thick
Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
|
|
|
|
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 14 (enable
ethanol setup bit 1) |
Alternate location: DB25 Pin 3 (enable ethanol setup bit 0) |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
S63TU |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 16 (enable
ethanol setup bit 1) |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
BMW |
G-Series |
B46 & B48 |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box or jump terminal
with fuse |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 4 (enable
ethanol setup bit 0) |
JB4 firmware versions prior to V22 will enable bit 2 instead of 0 |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
B58 |
Port Injection Controller |
Power |
Red |
12V |
Fuse
box or attach to jump terminal with fuse assembly |
|
Ground |
Black |
Chassis |
Shock
tower |
|
RPM |
Purple |
Pin 3 of JB4 OBDII 4
pin connector |
Insert pin for purple wire
into slot below the green wire |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 14 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V trigger |
Thick Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
|
|
|
|
|
|
|
|
|
|
CPI FSB |
Signal |
Blue |
JB4 DB25 Pin 14 |
Enable ethanol setup bit 7
and set all fuel biases to 50 |
|
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|
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|
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|
|
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 4 (enable
ethanol setup bit 0) |
JB4 firmware versions prior to V22 will enable bit 2 instead of 0 |
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
N63TU |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 16 (enable
ethanol setup bit 1) |
|
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
S58 |
Port Injection Controller |
Power |
Red |
12V |
Fuse
box or attach to jump terminal with fuse assembly |
|
Ground |
Black |
Chassis |
Shock
tower |
|
RPM |
Purple |
Pin 3 of JB4 OBDII 4
pin connector |
Insert pin for purple wire
into slot below the green wire |
|
TMAP |
Yellow |
Pin 1 on JB4 DB25
connector |
|
|
Signal |
White |
Pin 16 on JB4 DB25 Connector |
Set Meth signal scaling to 99 and all fuel biases to 50 |
|
12V trigger |
Thick Yellow or Orange |
12 volt
trigger wire for secondary pump (optional) |
When using this method to trigger the secondary pump, trigger
gound wire goes to chassis ground. |
|
|
|
|
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground
point in engine bay |
|
Signal |
White |
DB25 Pin 4 (enable
ethanol setup bit 0) |
|
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
S63TU |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Shock tower or ground point in engine bay |
|
Signal |
White |
DB25 Pin 16 (enable
ethanol setup bit 1) |
|
|
|
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
|
S68 |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
|
Ground |
Black |
Chassis ground |
Shock tower or ground point in engine bay |
|
|
Signal |
White |
DB25 Pin 4 (enable
ethanol setup bit 0) |
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Fiat Abarth |
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|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
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|
Ford |
|
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|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
|
|
|
|
General Motors |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
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|
|
|
Honda |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
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|
|
Infiniti |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 4 on JB4 DB25
connector (enable ethanol setup bit 0) |
|
|
|
|
|
|
Jeep |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
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|
|
Kia Hyundai Genesis |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 4 on JB4 DB25
connector (enable ethanol setup bit 0) |
|
|
|
|
|
|
|
|
|
|
CPI FSB |
Signal |
Blue |
JB4 DB25 Pin 16 |
Enable ethanol setup bit 7, set meth scaling to
98,
and set all fuel biases to 50 to get started. |
|
|
|
|
|
Lexus |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
|
|
|
|
Mazda |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 4 on JB4 DB25
connector (enable ethanol setup bit 0) |
|
|
|
|
|
|
Maserati |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
|
|
|
|
Mclaren |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
|
|
|
|
Mercedes Benz |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
|
|
|
|
Mini |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
|
|
|
|
|
Subaru |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
|
|
|
|
|
|
Porsche |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 4 on JB4 DB25
connector (enable ethanol setup bit 0) |
|
|
|
|
|
|
Toyota |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 4 on JB4 DB25
connector (enable ethanol setup bit 0) |
|
|
|
|
|
|
Volkswagen Audi |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
|
All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
|
Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
|
Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
|
|
|
|
|
|
Volvo |
|
|
|
Platform |
Engine |
Device |
Wire |
Color |
Connects to… |
Additional notes |
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All |
All |
Flex Fuel Analyzer |
Power |
Red |
12 volts |
Fuse box |
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Ground |
Black |
Chassis ground |
Any good ground point in the engine bay |
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Signal |
White |
Pin 16 on JB4 DB25
connector (enable ethanol setup bit 1) |
Set Meth signal scaling to 100 |
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