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If you are running a Gen IV Engine, we have a Harness & ECM Package for you. If you are building a Hot Rod - Muscle Car - Off Road Vehicle then our Plug-N-Play Packages is as easy as 1, 2, 3. All Wire Harnesses are tagged and come with instructions.
All Custom Gen IV Wire Harnesses are professionally built to excede OEM standards. The harness shown on the page is an example of a LS3 with 4L70E setup. Select from the list of harness packages below for more details about each harness package.
All Gen IV Harnesses come with these Standard Features:
- Fuse Blocks
- Diagnostic Plugs
- Check Engine Light
- Fuel Pump Relay
- Speedo - Tach - Oil Pump - Water Temp Leads
- Power Wires
- Cruise Control (when Requested)
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All Engine & Transmission Harnesses that we offer are built using OEM Style Wires, Connectors & Terminals. The Harnesses are also enclosed in Heat Resistant Black Split Loom Tubing for a factory look. Each harness is tested prior to shipment and are designed with the Hot Rod Enthusiast in mind. The harness shown on the page is an example of a LS3 with T56 setup. Package Includes:
All Custom Harness Packages are Custom built to Order. Most Orders will ship after 14 days. ECM programming specs are to be provided by the customer. Please visit our ECM Programming Page to download a copy of our Programming worksheet. |
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We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
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All Engine & Transmission Harnesses that we offer are built using OEM Style Wires, Connectors & Terminals. The Harnesses are also enclosed in Heat Resistant Black Split Loom Tubing for a factory look. Each harness is tested prior to shipment and are designed with the Hot Rod Enthusiast in mind. The harness shown on the page is an example of a LS3 with 4L70E setup. Package Includes:
All Custom Harness Packages are Custom built to Order. Most Orders will ship after 14 days. ECM programming specs are to be provided by the customer. Please visit our ECM Programming Page to download a copy of our Programming worksheet. |
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We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
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All Engine & Transmission Harnesses that we offer are built using OEM Style Wires, Connectors & Terminals. The Harnesses are also enclosed in Heat Resistant Black Split Loom Tubing for a factory look. Each harness is tested prior to shipment and are designed with the Hot Rod Enthusiast in mind. The harness shown on the page is an example of a LS3 with 4L80E setup. Package Includes:
All Custom Harness Packages are Custom built to Order. Most Orders will ship after 14 days. ECM programming specs are to be provided by the customer. Please visit our ECM Programming Page to download a copy of our Programming worksheet. |
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We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
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All Engine & Transmission Harnesses that we offer are built using OEM Style Wires, Connectors & Terminals. The Harnesses are also enclosed in Heat Resistant Black Split Loom Tubing for a factory look. Each harness is tested prior to shipment and are designed with the Hot Rod Enthusiast in mind. The harness shown on the page is an example of a 5.3L Vortec with 4L60E setup. Package Includes:
All Custom Harness Packages are Custom built to Order. Most Orders will ship after 14 days. ECM programming specs are to be provided by the customer. Please visit our ECM Programming Page to download a copy of our Programming worksheet. |
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We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
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All Engine & Transmission Harnesses that we offer are built using OEM Style Wires, Connectors & Terminals. The Harnesses are also enclosed in Heat Resistant Black Split Loom Tubing for a factory look. Each harness is tested prior to shipment and are designed with the Hot Rod Enthusiast in mind. The harness shown on the page is an example of a LY6/L92 Vortec with 4L70E setup. Package Includes:
All Custom Harness Packages are Custom built to Order. Most Orders will ship after 14 days. ECM programming specs are to be provided by the customer. Please visit our ECM Programming Page to download a copy of our Programming worksheet. |
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We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
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We use Factory GM/Delco ECMs. We find these superior to the Aftermarket & Boat Engine controllers used by other companies. Factory ECMs, unlike Aftermarket ECMs, allow you to control your transmission. Another avantage of Factory ECMs is that any GM Dealer/Independent Technician cam scan the ECM via the Diagnostic Port.
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We offer Harness Kits for GM Gen IV (58x Tooth Reluctor Wheel) Engines. This includes 2006-2010 LS2 - LS3 - LS7 and 2007-2010 4.8L - 5.3L - 6.0L - 6.2L Engines with 4L60E - 4L70E - 4L80E - 6L80E - 6L90E Transmissions. A 58 tooth engine requires an ECM and TCM plus uses a "Lite Gray" crank sensor.
We also offer Wire Harness for the LY6 - L92 - L9H - L99 Engines with Variable Valve Timing.
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Southern Performance Systems, Inc Postal Address: 6050 Peachtree Parkway Warehouse Visits by Appointment Only |
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