iDatastart's ADS-THR-CH12 T-harness connects their iDatastart CMHCXA0 HC remote start module to your select Chrysler-built 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. You can identify your vehicle in our fit guide to see if this harness is compatible. Warranty: limited lifetime.