AEM 30-3805 Universal V8 Core Harness User Manual

Infinity Universal V8 Core Harness

System User Manual

30-3805

THIS PRODUCT IS LEGAL IN CALIFORNIA FOR RACING VEHICLES ONLY

AND SHOULD NEVER BE USED ON PUBLIC HIGHWAYS.

AEM Performance Electronics

AEM Performance Electronics, 2205 126th Street Unit A, Hawthorne, CA 90250

Phone: [phone] Fax: [phone]

http://www.aemelectronics.com

Instruction Part Number: 10-3805

Document Build 6/11/2014

AEM Infinity Harness Manuals2

1Introduction

Several universal wiring harness options are available for Infinity products. They range
in complexity from simple plug and pin kits to complete engine harness assemblies that
include power distribution centers. Custom wiring harness projects should only be
undertaken by experienced harness builders. If in doubt, please contact AEM for
recommendations.

30-3805 Universal V8 harness system for Infinity-8/10 systems

The Infinity Universal V8 Harness system consists of a universal core harness and
optional application specific extensions. It was designed with flexibility in mind. The
harness system includes many features and it can be used in many different
applications.

30-3807 Universal V8 harness system for Infinity-6/8h systems

The Infinity Universal V8 Harness system consists of a universal core harness and
optional application specific extensions. It was designed with flexibility in mind. The
harness system includes many features and it can be used in many different
applications.

30-3705 Universal Mini Harness for Infinity-6/8h systems

This harness is intended to be used as a starting point by experienced harness builders.
It saves time by including basic power distribution features that can be expanded to suit
many application requirements. It allows the harness builder to populate the ECU
connector with only the features needed by the application.

30-3702 Infinity-8/10/12 Mini-harness

This harness is intended to be used as a starting point by experienced harness builders.
It saves time by including basic power distribution features that can be expanded to suit
many application requirements. It allows the harness builder to populate the ECU
connector with only the features needed by the application. Includes 100 96" pre­terminated leads.

30-3703 Infinity-8/10/12 Mini-harness

This harness is intended to be used as a starting point by experienced harness builders.
It saves time by including basic power distribution features that can be expanded to suit
many application requirements. It allows the harness builder to populate the ECU
connector with only the features needed by the application.

30-3701 Infinity-8/10/12 Plug & Pin Kit

Bare necessities to begin a custom wire harness design. Includes 73 and 56 pin Molex
MX123 harness connectors, terminals and sealing plugs, main relay and relay socket.

30-3704 Infinity-6/8h Plug & Pin Kit

Bare necessities to begin a custom wire harness design. Includes 80 pin Molex MX123
harness connector, terminals and sealing plugs, main relay and relay socket.

This manual is focused primarily on the universal V8 harness system components but it

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can be used as a reference for any custom harness build based on the Infinity ECU.

Please read the entire User Manual prior to beginning any installation.

2Optional Extension Harnesses for Modular Harness System

Optional extension harnesses compatible with the 3805 V8 harness system are
available.

30-3805-00 GM Injector Adapter Harness

Adapter harness that mates EV1 style injectors in standard GM cylinder order (odd
cylinders on one bank, even cylinders on other) to 30-3805 Core Harness.

30-3805-01 Ford Injector Adapter Harness

Adapter harness that mates EV1 style injectors in standard Ford cylinder order
(cylinders 1-4 on one bank, cylinders 5-8 on other) to 30-3805 Core Harness.

30-3805-02 Single Channel Ignition Adapter Harness

Adapter harness that mates AEM Single Channel Coil Driver (30-2841) to 30-3805
Core Harness. Coil driver takes 5v falling edge ignition trigger signal from Infinity and
outputs a 12v rising edge signal. 12v rising edge signal can either be used to trigger an
inductive coil directly or trigger a single channel CDI box (MSD 6A, etc).

30-3805-03 VR Crank & VR Cam Adapter Harness

Adapter harness that mates variable reluctance (VR) crank and cam sensors to 30­3805 Core Harness. Legs to each sensor are 48” long.

30-3805-04 VR Crank & Hall Cam Adapter Harness

Adapter harness that mates variable reluctance (VR) crank sensor and Hall Effect cam
sensor to 30-3805 Core Harness. Legs to each sensor are 48” long.

30-3805-05 Hall Crank & VR Cam Adapter Harness

Adapter harness that mates Hall Effect crank sensor and variable reluctance (VR) cam
sensor to 30-3805 Core Harness. Legs to each sensor are 48” long.

30-3805-06 Hall Crank & Hall Cam Adapter Harness

Adapter harness that mates Hall Effect crank and cam sensors to 30-3805 Core
Harness. Legs to each sensor are 48” long.

30-3805-07 GM Stepper Idle Control Adapter Harness

Adapter harness that mates GM stepper idle control valve to 30-3805 Core Harness.
IAC connector is flat and meant for use with later model style control valves.

30-3805-08 Universal PWM Idle Control Adapter Harness

Flying lead to mate universal PWM idle control valve to 30-3805 Core Harness.
Connector to connect to control valve must be provided by end user.

30-3600 O2 Sensor Extension Harness

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AEM Infinity Harness Manuals4

Extension harness to connect AEM UEGO Wideband O2 sensor to 6 pin Deutsch DTM
in Infinity Mini Harnesses (30-3702/3703).

30-3601 IP67 Comms Cable

USB Mini-B comms cable; 39” long with right angled connector and bayonet style lock.

30-3602 IP67 Logging Cable

USB A-to-A extension cable: 39” long with right angled connector and bayonet style
lock.

33805 Kit Contents

Universal V8 Core Harness
User Instructions
DTM 8 Way Receptacle Assembly with 8 contacts
DTM 8 Way Plug Assembly with 8 contacts

4ECU Connectors

The Infinity-6/8h/8/10 ECUs use the MX123 Sealed Connection System from Molex.
AEM strongly recommends that users become familiar with the proper tools and
procedures before attempting any modifications or additions to these connector

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housings. The entire Molex user manual can be downloaded direct from Molex at http://

www.molex.com/mx_upload/family//MX123UserManual.pdf

53805 Power Distribution Center

Included in the harness is a Power Distribution Center (PDC), pre-populated with the required relays and
fuses for correct operation of accessory loads. The PDC comes with a bundle of flying leads that need to
be properly wired as part of the installation. Flying leads include switched ignition, an optional fused
+12V relay power output for auxiliary loads, and optional fused +12V relay outputs for a Fuel Pump and
Coolant Fan.

© 2014 AEM Performance Electronics

AEM Infinity Harness Manuals6

6Installation Notes

Wiring Conventions and EMI

Some wire harness assemblies come pre-wired with all connectors, fuses, and relays
needed to operate an engine. Harnesses that include a PDC generally require
extension/termination of the flying leads to their appropriate devices, and additional
sensors and other devices can be wired into the harness as needed for the specific
application. The following guidelines should be adhered to while completing the required
wiring.

A proper wiring job includes proper termination of the wire at the sensor. The wire
terminal end must be moisture tight where it plugs into the sensor and it must have
strong, electrically sound terminals. The preferred method of securing a wire to a
terminal is to use a crimp terminal with NO solder. It is important to use the proper
crimping tool for sound terminal construction. Plastic terminal plugs must have moisture
tight seals. Inspect each plug to make sure the seals are in place. Di-electric grease can
be added in the terminal slots to further aid in corrosion resistance.

If a splice into a wire must be made and no solder-less terminals are available, then you
must properly solder the splice.

Noise can be a serious problem and can cause intermittent misfiring of the engine.
Every precaution should be taken to prevent interference to the ECU’s operation.
Resistive plug leads are REQUIRED.

To eliminate or reduce the chance of EMI, wires that carry high current must run in
twisted pairs. An example of this would be the power leads from a multiple spark ignition
system. These ignition systems can carry up to 100 amps for a couple milliseconds at
the time of discharge, which induces a strong magnetic field in close proximity of the
wires.

The routing of the wire loom is critical to EFI system performance and safety. The
following safety considerations should be made when installing the wire loom:

Heat protection: the loom should be placed away from or insulated from sources
of heat. The obvious item(s) that should be avoided are the exhaust manifolds,
EGR delivery tubes, and turbochargers. If it is absolutely necessary to route a
wire in close proximity to any of these items, then a suitable insulator must be
used.
Noise suppression: do not route wires near the HT leads. For coil-on-plug ignition
systems this is not as critical.
Moving component protection: route wires away from moving components such
as fans, the blower belt, or the throttle linkage. Also, make sure the wires are not
under any strain when the engine is at full deflection on the motor mounts.
Never have the wires in exposed bundles throughout the engine compartment.

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Determining ECU Location

It is recommended that the ECU be placed in an environment that does not
expose it to temperatures above 85° Celsius (160F).
In cases where the Infinity is to be used in place of the stock ECU, the location
that the stock ECU occupied is suitable.
On applications where the ECU is to be located in a different position than stock,
the interior of the vehicle is best.
The Infinity should be located in a place that reduces the length of extension wires
from the PDC while maintaining an environmentally sound location.
The ECU location must permit the PDC to be mounted in a serviceable location.

Power Distribution Center

PDCs included in the harness assemblies generally include all relays and fuses
necessary for proper function and should be mounted in a location which permits
serviceability. Ideally the PDC should be located in the passenger compartment, or if
necessary within the engine compartment as far away from heat sources as can be
achieved. Some PDCs contain flying lead bundles which must be wired to the battery,
fuel pump and radiator fan(s), switched ignition and possibly other interfaces. Routing of
this flying lead bundle should also be taken into account when determining the mounting
location of the PDC.

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AEM Infinity Harness Manuals8

73805 Installation Tips

30-3805 Universal Core Harness Installation

Install the core harness in the vehicle as shown in the image above using the firewall

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Grommet mounting hole requirem ents

grommet to separate engine compartment connections from vehicle cabin connections.
The main power and ground feeds (R1-R4) are designed with a long branch that can be
used to route to a trunk mounted battery. They include a heavy duty, serrated ring
terminal and should only be modified if absolutely necessary.

© 2014 AEM Performance Electronics

AEM Infinity Harness Manuals10

3805 - Infinity Pinout Universal V8

Default functions are listed in parentheses

C1

Infinity Connector C1

73 Way F Receptacle 0.64 2.8 Series Sealed (GY)

Pin

Wire Color

Gauge

Destination

123

C1-1

--- C1-2

GRN20C8-1

LowsideSwitch_5

C1-3

ORG/RED

20

C11-5

LowsideSwitch_6

C1-4

WHT

18

C13-4

UEGO1_Heat

C1-5

GRN

20

C13-2

UEGO1_IA

C1-6

RED

20

C13-6

UEGO1_IP

C1-7

BLK

20

C13-1

UEGO1_UN

C1-8

ORN

20

C13-5

UEGO1_VM

C1-9

RED

20

C14-2

Flash_Enable

C1-10

RED20P1-8

+12V_R8C_CPU (Perm Power)

C1-11

DK GRN/WHT

20

C5-4

Coil4

C1-12

LT BLU

20

C5-3

Coil3

C1-13

RED/WHT

20

C5-2

Coil2

C1-14

VIO20C5-1

Coil1

C1-15

LT BLU/WHT

20

C5-10

Coil6

C1-16

DK GRN

20

C5-9

Coil5

C1-17

VIO

20

P1-37

LowsideSwitch_2 (Coolant Fan 1 Control)

C1-18

VIO/BLK

20

C8-3

LowsideSwitch_3 (MIL Output)

C1-19

BLK/WHT

20S2

AGND_1 (Analog Sensor Ground)

C1-20

BLK/WHT

20

C10-2

AGND_1 (Analog Sensor Ground)

C1-21

WHT

20

C10-1

Crank Position Sensor (Hall Effect)

C1-22

GRN

20

C10-3

Camsha ft Position Sensor 1 (Hall Effect)

C1-23

--- C1-24

--- C1-25

DK BLU/RED

20

C8-2

Digital_In_4 (Vehicle Speed Sensor Hall Effect)

C1-26

BLK/RED

20

C8-8

Digital_In_5 (Flex Fuel Sensor)

Auxiliary Connectors

The kit includes 2 optional connector kits that mate with connectors labeled Aux1 and
Aux2 on the main harness trunk. See the 3805 Core Harness Pinout section for details
on available functions. All default functions are listed in parentheses. Many are re­assignable through the setup wizard interface.

83805 Core Harness Pinouts

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C1-27

--- C1-28

--- C1-29

YEL/WHT

20

P1-1

+12V_Relay_Cntrl (Lowside switch output)

C1-30

BLK20S1

Battery Ground

C1-31

GRN20C4-2

AEMNet CANL

C1-32

WHT

20

C4-1

AEMNet CANH

C1-33

WHT/RED

20

C8-4

LowsideSwitch_1 (Boost Control Soleonoid)

C1-34

VIO/WHT

20

P1-13

LowsideSwitch_0 (Fuel Pump)

C1-35

DK BLU

20F2 Analog_In_7 (Throttle Position Sensor)

C1-36

LT GRN

20F1

Analog_In_8 (MAP Sensor)

C1-37

GRN/BLU

20F3

Analog_In_9 (Fuel Pressure Sensor)

C1-38

BLU/BRN

20

C8-7

Analog_In_10 (Baro Sensor)

C1-39

BRN/ORG

20

C8-5

Analog_In_11 (Shift Switch Input)

C1-40

LT GRN

20

C8-6

Analog_In_12 (Mode Switch)

C1-41

GRY20S3

+5V_Out_1 (Analog Sensor Power)

C1-42

ORG

20

C10-5

+5V_Out_1 (Analog Sensor Power)

C1-43

--- C1-44

--- C1-45

BLK

22

C10-7

Crank Position (VR+)

C1-46

RED

22

C10-8

Crank Position (VR-)

C1-47

WHT

22

C10-9

Cam1 Position (VR-)

C1-48

GRN

22

C10-10

Cam1 Position (VR+)

C1-49

--- C1-50

--- C1-51

--- C1-52

--- C1-53

--- C1-54

--- C1-55

BLK20S7

Battery Ground

C1-56

YEL/BLK

20

C6-10

Injector 6

C1-57

BLU/RED

20

C6-9

Injector 5

C1-58

LT BLU/BLK

20

C6-4

Injector 4

C1-59

PNK/BLK

20

C6-3

Injector 3

C1-60

BLK20C16-L

Battery Ground

C1-61

RED20C3-G

Fused +12V Power from Relay

C1-62

LT GRN/BLK

20

C6-2

Injector 2

C1-63

BLU20C6-1

Injector 1

© 2014 AEM Performance Electronics