Looking for the best in aesthetics, weight savings and reliability out of your harness?  Our Pro Series harness completely replaces your old OEM harness so you can forget about those electrical gremlins.

This harness is perfect for a BMW E46 1999-2006 with the GM LS1 Cable Throttle engine swap. This harness was developed in house on an actual LS1 engine to ensure a perfect fit to all engine connections.

BMW E46 LS1 NOTES
  • Conversion from stock electronic Drive-By-Wire throttle pedal to cable throttle is REQUIRED

SUPPORTED ENGINES: Gen 3 Drive By Cable LS1/Vortec

  • Any F-Body LS1 from 1999-2002 Camaro, Firebird, Trans Am or Corvette
  • Any LS1 from 2004 Pontiac GTO
  • Any Truck/SUV LSx/Vortec engine from 1999-2004 Silverado, Suburban, Tahoe, Escalade, etc.
  • Supports Engines with DRIVE BY CABLE THROTTLE ONLY

CHASSIS: BMW E46 1999-2006 USING CABLE THROTTLE CONVERSION ONLY 

  • BMW E46 1999-2006 including i & ci versions of 316 / 318 / 320 / 323 / 325 / 328 / 330, 330 ZHP & M3
  • Factory Speedometer functions by utilizing the ABS system outputs. As long as this system is properly functional, the speedometer will remain accurate. 
  • Factory Tachometer remains accurate unless number of cylinders changes. Use Dakota Digital SGi-8 if the number of cylinders has changed from factory.
  • A/C wiring utilizes stock BMW fuse box AC relay and wiring. The AC compressor connector must be wired to the chassis’ output AC signal wire.
  • Retains functional alternator charge display, oil pressure display, coolant temperature display, reverse lights and wipers.
  • Factory cooling fans remain functional if that option is selected.

PRO-SERIES HARNESS TECHNICAL SPECS

  • Plug and Play – simple and efficient
  • NO CORE HARNESS or additional wiring required
  • OEM wire colors used, where applicable
  • All sensor signal connection use EM shielded wires
  • Super-High Temp Fireproof fiberglass loom used on knock sensor, O2 sensor & transmission branches located in hot areas. (-40°C/-40°F to +450°C/+845°F operating temperature)
  • Point-to-Point continuity tested on every wire
  • Constructed using exact OEM connectors and seals
  • Made with high temp TXL wire with adhesive shrink tubing (-40°C/-40°F to +125°C/+257°F operating temperature)
  • Wrapped in lightweight nylon loom (-94°C/-137°F to +125°C/+257°F operating temperature)
  • Includes a charge harness and improved grounds
  • Fully tested after production for an easy plug-and-play installation

PRO-SERIES HARNESS INCLUDES

  • Harness fully redesigned with optimized & improved power and ground routing
  • Supplied with 5 Fused Relays in a weather-tight sealed Bussmann Box
  • Relays provided: Ignition, Fuel Pump, Fan1, Fan2 & A/C relay (if not using A/C can be used for aux function like oil/diff cooler fan etc)
  • Main Engine and Transmission one-piece tucked harness
  • Alternator charge cable built into the main harness
  • Knock sensor sub-harness connector
  • MAFS connector
  • MAP sensor connector
  • Intake Air Temp connector
  • TPS connector
  • 8x Injector connectors
  • Integrated Bank 1 and Bank 2 Coil Harnesses in the OEM location – no sub-harnesses required
  • Oil Pressure gauge connector
  • Proper gauge wiring support for Dual 30 Amp PCM-controlled electric cooling fans
  • Cam sensor connector
  • Crank sensor connector
  • Bank 1 and Bank 2 FRONT Oxygen sensor connectors (High Temp shielding)
  • 1 x Ground ring terminal
  • Idle air connector
  • ECT sensor connector and cluster coolant temp switch connector
  • Reverse lights sensor connector
  • Speed sensor connector
  • Reverse Lockout connector
  • Skip Shift connector
  • Alternator connector
  • Starter signal/start connector
  • A/C Wiring is available as an option. Please note that adding A/C to an LS2 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
  • OBD2 Communication connector
  • Printable install instructions with pictures
  • Turn Key ENGINE START Guarantee

Return Policy

 

All items are subject to a 20% restocking fee on all returnable items within the 14 days of the purchasing date depending on their condition when returned.

If you placed an order and received free shipping but returned an item and you no longer qualify for the free shipping, you, the buyer, are responsible for paying the original cost of shipping and the return shipping cost..

What is a reasonable restocking fee? It is the percentage of the item’s price depending on type of item and condition when it is returned. Our restocking fee is 20%.

Type of Return Request

Restocking Fee Applied?

Buyers changes mind, buyer remorse or price difference

Yes

Buyer refuses delivery

Yes

Buyer returns an item but it arrives to the seller damaged, defective or materially different than what was originally shipped by the seller

Yes

Buyer receives an item materially different from what they ordered

No

Order is returned as undeliverable

No but an amount equivalent to the return shipping costs will be deducted

Items arrive to the buyer damaged or defective

No

Buyer refuses delivery due to visible damage incurred during shipping or caused by the carrier

No