Wiring Specialities LS1 Wiring Harness for S13 240sx – PRO SERIES

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SKU: WS-S13-LS1-Pro Category:


The Wiring Specialties Pro-Series LS1 wiring harness is a Brand New, Tucked, Plug and Play harness that was designed and tested by our in-house experts specifically for a LS1 swapped S13 240sx. It was modelled on the actual LS1 engine and is race proven at Formula Drift.

Click here for for S14 240sx LS1 harness.


Plug and play.
No cores and additional wiring required.
Point to point tested on every wire.
Constructed using OEM connectors and seals.
Made with high temp TXL wire (-40C to +125C operating temperature) with adhesive shrink tubing.
Wrapped in lightweight nylon loom with -94C to +257C operating temperature.


Wiring for OEM fans, wipers, oil pressure sensor and coolant sensor (requires oil pressure and coolant adapters).
A/C Wiring is available as an option. Please note that adding A/C to an LS1 S13 is not easy and will require custom lines and sensor installation. Wiring Specialties will provide a wiring sub-harness needed for operating the A/C system ONLY.
Speeedometer calibration (requires SGI-5 unit).
OEM 240sx tachometer functionality.
Wiring and relays for Dual OEM LS fans.
Wiring for Oil pressure, alternator dummy light, reverse lights, reverse lockout and skip-shifts lockout.
Works with OEM dash instruments gauge cluster.
Built-in charge harness for alternator charging.
OBD2 Consult port.

Note: Coolant and Oil sensor adapters retain the use of factory Nissan Oil Pressure and Coolant Temp cluster functionality. The adapters are also machined to support most aftermarket temperature and pressure gauges that require a 1/8″-27 thread pitch. Will require the use of a Nissan S13/S14 Oil and Temp sensors (1-wire).

Note: LS2 and up engines, additional accessories and other injector types are subject to additional fees.


Any LS1 from 1999-2002 Camaro, Firebird, 2004 GTO, Corvette
Any Vortec engine from 1999-2007 (LM4, LM7, LQ4, LQ9, LR4, L33, L59)
Supports Engines with DRIVE BY CABLE and T-56 transmission


09354896, 12200411, 12586242


09254896, 12200411, 12576106, 12586242, 12586243, 12597191, 12583560, 12583561, 12596679, 12589463


Weight 25 lbs
ECU Option


LSx Option

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LSx Transmission style

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S13 Body Harness

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240sx Chassis

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Air Conditioning

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Speedometer Calibration

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Sensor Adapters

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Air Flow Meter Type


Oxygen (O2) Sensor type

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Coil Pack Harness

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Injector Type

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