• Now AcceptingPayPal
    0

Select your vehicle Select your vehicle

Select your vehicle
Select submodel to confirm fitment
Universal Race Car UZ V8 Full Harness

Tweak'd 1UZ Full Engine Wiring Harness Universal Race Car UZ V8 2UZ 3UZ

These are custom made to order. Expect to send in your original harness, and minimum of 10 week wait time

Finally, a full harness for your V8 swap to make things much easier! We've done more than a few over the past decade, and now we're teaming up with the renown Dr. Tweak to offer a top shelf harness and their lifetime warranty!

These harnesses are all custom made for each individual application, so in many cases, we will need a core harness to start with. Expect to nee to send in your UZ harness, as well as your intended chassis' factory engine harness, depending on which it is. Connectors typically do not get reused from the original harness'; we just need them to verify connector type and length as the UZ engines have a variety of harness differences depending on year and chassis.

Please contact us and let us know directly what your application will need regardless, and we'll be happy to get another UZ powered vehicle out there tearing it up!! As of right now, we only have support for automatic transmissions if you run the factory ECU for them.

Standalone applications will require a dual ECU setup in most newer 1998+ chassis'. On Toyotas specifically, the factory chassis ECU gets retained for MultiPlex compatibility, meaning the factory ECU will control the A/C, gauge cluster, throttle, auto transmission, ABS, etc. Feel free to reach out to us with what your swap is and we can make sure you get the right price and harness for your application!

Not rated yet
0
Vehicle Specific
Check if this part fits your vehicle.
  • $1,395.95
 
OR

This listing is for a brand new engine harness swap into your favorite chassis. These wiring harnesses are built using new wire, new OEM terminals, and new OEM connector housings. Designed for use with the JDM ECU (High impedance injectors, MAP and IAT sensor, no MAF wiring). The only used connectors on the harness are the plugs that connect to the body harness which are taken from original core harnesses.

Available for auto or manual transmission (auto is $200 extra).  

These harnesses aren't just built and shipped it off. Every harness we build is laid out on our tried-and-true harness jigs to ensure a perfect fit every single time. Every detail is checked to make sure that your wiring harness is built to our standards. We don't ever send a harness to a customer unless we would happily install that on our own engine swap for our personal car. Then not one, but two engine swap experts double-check every single terminal, connector, and wire on your harness to make sure every circuit has perfect continuity. While we all know that mistakes aren't impossible, we ship every one of our harnesses with full confidence that you, our customer, will never need to use our unbeatable LIFETIME warranty on these.

    • SKU
      XAT-UZ-Tweakdharness
    • Weight
      5 lbs
    • Dimensions (L x W x H)
      10 x 10 x 10 in
  • IAT Sensor Type
    Factory Toyota IAT Sensor, Aftermarket / GM IAT Sensor, DTM 2-Pin (AEM and Haltech), None, IAT in MAF Sensor (VVTI engines)
  • MAP Sensor Type
    Factory Toyota MAP Sensor, Aftermarket / AEM MAP Sensor, Link 2,3,4 bar MAP (DTM 3-Pin), None, Onboard MAP (Haltech Elite/ECU Master), not recommended
  • Throttle
    Cable Actuated, Electronic DBW
  • Transmission Type
    Manual Nissan Z 6 Speed (CD009, etc.), Toyota Automatic (ECU must match trans), Unlisted (Contact us), Manual R154, Manual V160, W55/W58, KA/SR Nissan 5 speed, GM T56, with GM VSS, GM T56, with Ford VSS, GM T56 – Grannas Racing Bluetooth VSS
  • Alternator Plug
    Round, Oval, Newer 2UZ Sequoia 4 pin
  • Engine Management
    Factory ECU, Haltech Elite 2500, Haltech Elite 2000, AEM Infinity 708 / 8, AEM Infinity 508 / 8h, Other aftermarket EMS (contact us), AEM Infinity 506 / 6, ProEFI 128, LinK G4+ Xtreme, LinK G4+ Storm, LinK G4+ Thunder, Haltech Nexus R3, Haltech Nexus R5, Motec M130, Motec M150
  • Starter Plug
    Square (older), Round (newer)
  • MIL-Spec Firewall Connector
    Tweak'd anodized plate and grommet, MIL-SPEC connector and plate (manual trans only, may require extra plug), No, Reuse firewall bulkhead grommet
  • Injector Type
    Denso / ID2000 / JDM High Impedance, EV1/Bosch Square Style, ID1000/1050x/1300/1700, USCAR, or EV14, USDM GTE Low-Impedance, EV1/Bosch Low-Impedance
  • Chassis
    MkIV Supra N/A 93-97, MkIV Supra turbo USDM 93-98, Mk3 Supra 86.5/87 (Core required), Mk3 Supra 88/early 89 (Core required), Mk3 Supra 89.5-90 (Core required), Mk3 Supra 91/92 (Core required), SC300 92-94, SC300 95-97, SC300 98/99, S13 Nissan 240SX (Core required), S14 Nissan 240SX (Core required), FD RX7 (Core required), IS300 2001 Dual ECU (Core required), IS300 2002-2005 Dual ECU (Core required), IS250/IS350 Dual ECU (Core required), FRS/BRZ/86/GT86 Dual ECU (Core required), Other Dual ECU (BMW E46+, G35/350Z, S2000, etc. (Core required), Universal (not chassis specific), LS400 UCF10, LS400 UCF20 non-VVTi, LS400 UCF20 VVTi, SC400 non-VVTi (92-97), SC400 VVTi (98-00)
  • TPS
    Factory (matches throttle body), Q45 TPS w/Nissan 3 pin Plug, Toyota 4 pin, with 6 pin GTE IAC Valve, Toyota 4 pin, with Ford IAC Valve, Toyota 4-Pin, with No IACV, VQ35 DBW Throttle, Bosch DBW Throttle
  • Temp Sending Unit
    Round Plastic Connector, Metal Spade Terminal, Metal Ring Terminal, Use original from supplied core
  • Oil Sending Unit
    Round Plastic Connector, Metal Spade Terminal, Metal Ring Terminal, Use original from supplied core
  • Boost Control Solenoid
    No, Yes, weatherpack 2 pin
  • Fuel Pressure
    No, Yes, 3 pin psi sensor
  • Oil Pressure
    Yes, 3 pin psi sensor, No
  • Clutch Pressure
    No, Yes, 3 pin psi sensor
  • Exhaust Backpressure
    No, Yes, 3 pin psi sensor
  • Coolant Pressure
    Yes, 3 pin psi sensor, No
  • Flex Fuel
    No, Yes, Continental sensor, Yes, ProEFI sensor 4 pin
  • O2 Sensor Type
    Toyota JDM 3 Pin, Standard Toyota 4 Pin, VVTi Toyota 4 Pin, AEM LSU4.2 Wideband, AEM LSU4.9 Wideband, ProEFI LSU4.2 Wideband, ECU Master Classic LSU4.2, ECU Master LSU4.9
  • Engine
    1UZ non-VVTi, 2UZ non-VVTi, 2UZ VVTi, 3UZ, 1UZ VVTi
  • Expedite Order
    No, Yes

Most product ships from either the manufacture or largest wholesale location to pass the saving to you. Most orders will ship via UPS, as we will be able to provide the best rates and have had the least issues when using UPS.


IF YOU DO NOT LIKE THE AUTOMATED SHIPPING CALCULATOR'S RATES, PLEASE CONTACT US AND WE CAN GET YOU A BETTER ONE! Especially for anyone outside the USA, please contact us with a list of parts you'd like to order, and where you are located.

We accept the following payment methods:

Also Venmo and unmarked nonsequential dollar bills

Refund, Returns and Cancellation Policies: all returns are subject to the restocking fee as per the provider of the part. Engine internals are non-returnable due to their nature.