5VZ-FE Conversion Wire Harness

***It is important to read the full product description before ordering***

This product is built per order and is NON-REFUNDABLE. Please allow 4-6 weeks for order completion. This time can vary by season. If completion time is crucial, please contact sales@northwesttoysllc.com before placing your order.

The 5VZ-FE (3.4L) fuel injection system is entirely different from that of the older Toyotas. This means that the 5VZ-FE (5VZ) electronics and circuit must be installed in your older vehicle to make this engine swap possible. The ORS 5VZ Conversion Wiring Harness will provide the donor vehicle's engine and transmission control circuits in your older vehicle, allowing it to be used with the Toyota 5VZ engine computer and components.

From the factory, there are two primary parts of the OEM 5VZ fuel injection wiring circuit. The first is the engine wiring harness. This is the harness that is primarily attached to the engine. This is sometimes referred to as the injector harness. This harness connects the engine components, such as the fuel injectors, ignition coils, air flow meter, etc., to the engine computer (ECU) and the body harness.

The second part of the 5VZ electronic fuel injection circuit is built into the body wiring, along with the rest of the vehicle’s circuits. The body wiring includes the “under-dash” harness, the engine-bay harness (including fuse box), and even the wiring to the rear. About 40% of the 5VZ fuel injection’s wiring circuit is contained in this harness.

Instructions: Utilize the drop-down list to provide details about your swap.

• Format
• Donor Year
• Recipient
• Transmission

We utilize this information to review fitment before building your order, and your selections will change the options and pricing for your Wire Harness.

Format:

The 5VZ Conversion Adapter Harness is designed for applications that have a used, good-condition, intact engine wire harness from the donor vehicle. The Conversion Adapter Harness connects directly to the engine wire harness and the ECU, working in conjunction with the donor engine wire harness to complete the engine wiring circuit. Note: The Adapter Format of our conversion harness will not work with “JDM” engine wiring(from the Japanese Domestic Market); our Engine wiring format is recommended for use with JDM donor engines. Once again, the Adapter version requires the use of donor engine wiring that is intact and in good condition from a North American-based donor vehicle.

The 5VZ Conversion Engine Wire Harness completely replaces the engine wire harness, while also providing the portion of the donor engine circuit that was previously part of the body wiring. This harness is a combination of an engine wire harness and an adapter harness, housing 100% of the 5VZ engine circuit in one all-new piece. It is intended for situations when the donor engine wiring is missing, cut, or in poor condition, or when all-new wiring is desired. It also works well for JDM import engines, as the JDM engine wiring is challenging to use in a left-hand drive application.

Donor Year:

• 1995-2000
• 2001-2004, including CA Emissions

Recipient Vehicles:

The 22R-E/3VZ-E Vehicle
available for 1985-1995 Toyota Trucks/4Runners and 1993-1994 T100 vehicles that originally came equipped with the 3.0L 3VZ-E engine or the fuel-injected 22R-E. This version requires that the original body wiring and fuse box are still in place and will plug directly into the body wiring for a simple install. Very little splicing is required to install this version; it is nearly 100% plug-and-play. The original wiring in your older Toyota will not need to be torn apart, and this version will accommodate your OEM gauges (the tachometer will require some additional work during installation), speed sensor, reverse lights, 4×4 system, and 4×4 indicator lamp.

Other
It is designed for virtually any other vehicle. It works well with carbureted vehicles, different makes, and some custom or race vehicles. This version requires that the vehicle already have a basic electrical system in place. This basic system must include the following components: start and ignition switch, charging, fuse/battery, and gauge circuits. This will connect to the recipient vehicle through a few simple splices. Note that the Stand-Alone/other version includes a fuel pump, power, and control circuit.

Transmission:

Manual Transmission
Use this option when using a manual transmission. This includes a case where the donor or recipient vehicle was originally an automatic transmission, and the engine setup will now be manual.

Automatic Transmission
Use this option when using a Toyota automatic transmission. This includes a case where the recipient was originally manual but is now being converted to an automatic transmission. Like the engine circuit, the transmission control circuit was initially split between the body and engine wiring. The Adapter format will include the portion of the transmission control circuit placed initially in the body wiring, and the Engine Wire Harness format will consist of all-new transmission connections.
If using an original 3VZ-based A340 automatic transmission, the harness will connect directly to the A340 sub-harness and connections; however, some recipient models will require the use of a late-3VZ (1994-1995) or 5VZ donor park/neutral switch (which is a direct and straightforward install). Additionally, a donor T100 ECU is required. When purchasing an adapter format conversion harness, a 98 or older 5VZ-A/T engine wire harness is required for use with a T100-based ECU. We recommend inquiring about application compatibility (by email or phone) when using an engine harness and T100 ECU from different applications. If a 1998 or older engine wire harness is not available, we recommend purchasing the engine format conversion harness.

Note(s): For some applications, we will need a core connector from your vehicle. If your vehicle is a 1985-1990, we need one core connector. It is located on the 22R-E or 3VZ-E engine harness, near the ECU connectors. Two connectors join the engine harness to the body/dash harness; one of these is required for proper operation. Once an order is placed, we will send a picture of the necessary connector and a label file (for printing) that can be used to send the core connector in a USPS Small Flat Rate Box. Cut the connector needed from the engine harness with 1-1/3″ of wire lead. We will fill the core connector with new wire terminals.

Please include the following information in the “Order Notes” section or send a separate email when placing your order. If sending a separate email, ensure the name on the order is visible.

From Donor Vehicle:
VIN, only if 100% sure of engine origin,OR part numbers requested below
Toyota ECU part number (8966x-xxxxx)
For the Adapter Harness version, the Toyota engine harness part number (82121-xxxxx) can be found on a paper tag near the ECU connections.
Year
Model
4WD or 2WD
Manual or Automatic Transmission

From Recipient Vehicle:
VIN – please email an image of the VIN tag for 1990 and older models
Year 
Model
Original Engine
Manual or Automatic Transmission (originally)
Indicate the specific transmission to be used in the conversion
Shifter to be used (for A/T models)
4WD or 2WD
If 4×4, indicate transfer case application, original to transmission, or changed.
Front suspension type (original or modified)
Plans to add a supercharger with a 7th-Injector fuel kit?
For 89-95 Trucks and 90-95 4Runner, indicate if the ADD (Auto-Hub) system is in use.
Swapped battery location.OEM (original-type) tachometer in use?

For Other Recipient: ECU Location
For Other Recipient: Fuel pump location
For Other Recipient: Speedometer type