Ignitions and Electrical› Wiring Harnesses

Wiring

Specialties PRO SERIES RB26DETT Engine Harness

$839.00

SKU: WRS-PRORB26-DAT

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Wiring Specialties PRO SERIES is an engine wiring harness designed for RB26DETT engine swaps into Datsun vehicles.

This harness replaces the old OEM harness for a clean and worry-free installation, aiming for a guaranteed startup. It is specifically developed on an actual RB26DETT engine to ensure a perfect fit to all engine connections.
Show original supplier description
The Wiring Specialties PRO SERIES harness is engineered for Datsun vehicles undergoing an RB26DETT engine swap. Built to exceed OEM specifications, this harness features optimized wire quality and power/ground routing. The 'tucked' approach ensures a clean and worry-free installation process, aiming for a guaranteed startup. It has been meticulously developed and tested on an actual RB26DETT engine to guarantee a perfect fit for all engine connections. An optional self-contained, pre-wired fuse and relay block is available for ignition, cooling fans, and fuel pump. If you opt out of the fuse block, you will need to connect your own relays and switch panel. Basic connections for start signal, fuel pump, tach, speedo, and alternator warning light are required. Please note that mechanical cable-driven speedometers are not compatible; you may need to run aftermarket gauges and potentially adjust the speedo and tach signals using a frequency modulator. Wiring Specialties offers various options for performance upgrades to customize your harness.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWiring
Part NumberWRS-PRORB26-DAT
CategoryIgnitions and Electrical

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy