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Omegalink OL-HRN-RS-GM12

T-Harness for a remote start system in select 2010-up GM vehicles

Item # 514HRSGM12

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Item # 514HRSGM12

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About the Omegalink OL-HRN-RS-GM12

Buck Pomerantz

Simplify your remote start installation

Omegalink's OL-HRN-RS-GM12 T-harness connects an Excalibur remote start system to your select GM vehicle. This T-harness plugs into your vehicle's electrical databus system, allowing you to start and stop the engine remotely, and control some basic factory security functions as well. Some wiring may be required — one to four connections, typically. Also, in most applications your remote start system will require a digital immobilizer bypass module, like Omegalink's OL-MDB-ALL, for full remote start functionality. You can identify your vehicle in our fit guide to see if this harness is compatible. Warranty: 1 year.

What's in the box:

  • 41" Main T-harness
  • Two 9" 6-pin T-harnesses
  • 5" 10-Wire immobilizer adapter harness
  • Online installation instructions link

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More details on the Omegalink OL-HRN-RS-GM12

Research Team

Product Research


Overview: The Excalibur (Omega) OL-HRN-RS-GM12 installation harness is designed to simplify the installation of your Excalibur 10-70 Series remote start system (sold separately) into select 2010 - up Buick, Chevrolet, and GMC vehicles with standard key and flip-key ignition systems.

Installation: The Excalibur kit includes various vehicle-specific harnesses designed to provide a direct connection into your compatible vehicle while connecting to the remote start module on the other end, saving you considerable time and effort. The main T-harness interfaces into the ignition system, providing direct connections for the Starter, Ignition, and Accessory wires. Other functions may include Door Lock operation, Parking Light flash, Horn Honk, as well as Door, Hood, and Trunk pin switch activation (individual functions will vary, please see vehicle specific information for details).

Note: The included harnesses will take care of the bulk of required wiring, but some hardwiring into the vehicle's wiring system will still be required.

Remote Start Compatibility: The Excalibur harness kit is designed to plug directly into any Excalibur 10-70 Series remote start system, including; RS-272, RS-370, RS-375, and RS-475-3D. The Excalibur harness kit can also be used with other remote start systems, but will not be a direct plug-in (splicing required).

Immobilizer Bypass Compatibility: The Excalibur OL-HRN-RS-GM12 harness kit can be used with the following Excalibur, iDatalink and Flashlogic immobilizer bypass modules (all sold separately):

  • Excalibur: OL-MDB-ALL, OL-BLADE-AL64

  • iDatalink: ADS-ALCA (adapter harness included), ADS-BLADE AL*

  • Flashlogic: FLCAN (adapter harness included), FLCART*

*ADS-BLADE AL and FLCART are not compatible with Excalibur remote start systems.

Vehicle Compatibility Chart: Click here for a list of compatible Buick, Chevrolet, and GMC vehicles. Or, click here to find out what works with your particular vehicle.

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