s13sr20dettodatsunengineharnessinstall

8/13/2019 S13SR20DETtoDatsunEngineHarnessInstall

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Wiring Specialties | 47 Elbow Hill Rd | Brookfield | CT | 06804 | [email protected]

S13 SR20DET to a Datsun/Standalone Engine Harness Installation instructions

Thank you for purchasing the Wiring Specialties pre-made S13 SR Engine wiring harness. Please read these instructions

carefully before attempting the installation.

This Engine harness is designed to work with a S13 SR20DET engine installed into a NON-EFI chassis(Datsun/Toyota/etc). You will find a number of duplicate connectors located on the harness to accommodate for differentmanufacturing years of the chassis and engine configuration. In most cases, unused connectors should be removed.

DO NOT CONNECT THE ECU OR THE MAIN POWER UNTIL ALL ENGINE CONNECTORS HAVE BEENINSTALLED AND UNNECESSARY CONNECTORS REMOVED

NOTE! We will begin by connecting all the engine componentsfirst then proceed to the interior of the car to connect the ECUand the interface connectors.

Step1 (Routin g the Harness)

Feed the harness through the firewall (make an opening ifnecessary) on the US passenger side, with the ECU connector

and interface plugs leading the way.

Step 2 (Ignito r Chip)

Connect the Ignitor Chip into the two designated OEMconnectors (5-wire and 4-wire with Red/Color wires).

The connectors are now located inside the car, close to theECU.

Step 3 (Oxygen Senso r and Coilpacks )

Connect the oxygen sensor by routing the extended O2 wiringalong the firewall, past the engine and to the sensor. Please

secure the O2 wiring away from heat to avoid burning the wires.

Then, connect the Coilpack interface connector (Grey 6-pin) to theCoilpack sub-harness on the engine.
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Step 4 (Injectors)

Connect the Injector clips to their respective injectors. Eachconnector should only reach the correct injector for proper

installation.

Step 5 (Idle Air, Engine Grounds and Kn ock Sensor)

Connect the knock sensor (2-pin) and the Idle Air (4-pin)connectors to the OEM SR20DET sub-harness (not provided

with this kit) mounted to the intake manifold.Then, secure the 2 engine grounds to the back side of the

intake manifold and make sure the ground coils make a tightconnection.

Step 6 (Throttle Bo dy and Temp )

Now proceed to connect the Throttle Position Sensor (TPS)

connector.NOTE! You will notice 2 connectors for the TPS. The 6-pin

connector (taped) is for an Automatic throttle body and the 3-pin isfor a 5-speed unit. Connect the proper one to the throttle body

(Auto TPS will work with a 5-speed setup as well) andREMOVE the unused connector by cutting the clip off and taping

up the exposed wires.

Step 7 (CAS and MAFS)

On the front end of the harness two connectors are found. TheCam Angle Sensor (CAS) connector (Grey 4-pin) and the

MAFS universal quick-connect connector (Brown 3-pin. Routethe wiring harness along the front of the engine and connect it

to the respective sensors.Specific MAFS connectors are provided in a separate bag.

Step 8 (MAFS)

Proceed to install the Mass Airflow Sensor (MAFS) connectorto the sensor just past the front of the engine.

NOTE: There are 2 connectors supplied with the harness; TheZ32 and the OEM S13 SR20DET connectors are provided.

Choose the one to be used with your swap and install onto theharness with the quick-connect clip.

MAFS Signal wire REDMAFS Ground - GREEN

Power Black/Yellow


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Step 9 (back in the car)

At this point we should be done with all the wiring in the enginebay. Back in the passenger foot-well we find the ECU connector

(with Nissan Consult plug). Connect the ECU and tighten themounting bolt lightly.

Main Power Interface

Please make sure that all unnecessary connectors have beenremoved from the harness. Once the power is connected, no

wire cutting should be done.

Two (2) relays are found on the fuse block (marked) and fourfuses are used to safely power the engine unit. Please use the

proper current rating noted above.

1. Ignition (fuse - 15A)2. Fuel pump (fuse - 30A)3. ECCS ECU power control (fuse - 10A)

4. ECU memory

(fuse - 10A)

Addi t ional Features of the harness

The fuse block is fully removable from the harness. If thefuse block does not fit through the firewall opening, pleasedisconnect the block from the harness and reinstall frominside the car.

Nissan consult connector

Used for connecting the Consult / Diagnostics tools to theECU for monitoring and diagnostics.

ECU OUTPUT wiring (loose wires next to the fuse block)

1. Yellow/RedTachometer output2. OrangeCheck engine light output

POWER INTERFACE CONNECTIONS to CHASSIS

This harness is set up to work independently of the chassismake and model.

NOTE: The Main POWER/CONSTANT +12V feed wire islocated near the engine intake manifold and should berouted to the starter + terminal. Please connect the

eyelet provided on the harness to the Main starter terminal .

There are 2 wires that MUST be connected to the CHASSIS:

BLACKFUEL PUMP output (direct to drive fuel pump +)GREENIgnition signal (from Ignition Key ON, no load, just +12Vignition signal)

WE ARE DONE!

s13sr20dettodatsunengineharnessinstall

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