LS2_PKG SA-2Kr2 LSx sealed fuse box CPW Sealed Fuse Box Harness Closeup Jag_Eng3.jpg
(1 customer review)


LS Swap Stand Alone Engine Harness For E67 ECU 58x engine


LS Swap Wiring harness for LS2/LS3 Vortec 58 tooth engine shown. Actual product may vary.

These harnesses are not kept in stock due to variations in builds. Please allow 2-3 weeks for product to ship.

Our stock harnesses are 4 feet from the rear of engine passenger side.
Available options Transmission, Electric Fans, Air conditioning and Upgraded Braided loom.

Please call for custom ECM and/or Fuse Box Location,  extra Length.

Please call for harness packages with programmed computer and pedal

Built From Scratch Stand Alone Engine Harness

An engine management harness is pretty much what you will find from most wiring harness companies. Basically, it contains all of the necessary functions to make the engine start and run, while also supplying any necessary signals from the computer such as speedometer and tachometer.

Our engine management harness contains any fuses and relays that will be needed, and the required splicing on the consumer’s end of it is fairly basic. There are no main power feeds required for this harness, just a single switched ignition power will switch a relay in the harness that in turn, supplies 12V power to all of the required engine sensors and the ECU.

These harnesses are designed for the hot rod, or project car that will be using aftermarket or mechanical gauges. There is no output wire for oil pressure or temperature gauges since the aftermarket usually supplies sending units and wiring for these. The harness will have provisions to plug in to the stock oil pressure and coolant temperature sensors on the engine for use with OBD scanners/gauges.

All of our harnesses, whether it is a complete custom harness, or our engine management harness, come with an easily accessible DLC (Data Link Connector) that is usually long enough to be mounted in the passenger compartment. This allows for easy access to the ECU via a laptop or standard scan tool.
Harnesses come covered in standard OE split loom. Optional braided loom available for an extra charge.

The Fuses and Relays for our harnesses come in a compact sealed Fuse/Relay center where all of the components are in one central location. The fuse/relay center style is shown below. All of the fuses and relays are labeled on the underside of the covers just like a factory vehicle.

Not sure if you have VVT or DOD/AFM features?
2007 and up 58x engines have the option of Variable Valve timing to alter the camshaft timing while the engine is running. You can look for a few things to indicate if you have VVT. First, the plug on the front of the engine pointing downward on the driver’s side will have 5 wires going to it. A non-VVT engine will have 3 wires.

Front timing cover with 5 wire connector for VVT.     VVT Bulge in Timing cover
Front timing cover with 5 wire connector for VVT, and bulge in the timing cover under the water pump are indications that the engine you are working with has VVT.

Engines with AFM/DOD have a 5 pin connector next to the oil pressure sensor in the valley cover under the intake. This should be noticeable from the back of the engine. Also, raised vanes should be visible on the valley cover instead of it just being flat and smooth as on non-DOD/AFM engines.

View from back of engine showing DOD/AFM connector.

View from back of engine showing DOD/AFM connector.


This Harness fits the ECU from these vehicles   ( 5.3, 6.0, 6.2 )


5.3L/6.0L TRUCKS/SUV – E67 ECU

Additional information

Weight 15 lbs
Dimensions 12 × 12 × 8 in
Computer Type


Transmission Type

None, 4L60E / 4L65E / 4L70E, 4L80E / 4L85E, T56 / TR-6060, 6L80E / 6L90E

Add 2 Fans

No, Yes

Braided Loom

No, Yes

Engine Type

LS9, CTSV LSA, Camaro LSA, Crate LSA, CTSV LS2, SUV 5.3L, SUV LS2

1 review for LSA, LS9, LS2, LS3 LS Swap Stand Alone Engine Harness For E67 ECU

  1. doug marler (verified owner)

    Excellent quality, fit and finish. Fast shipping and great service!

Only logged in customers who have purchased this product may leave a review.

You may also like…