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iDatastart ADS-THR-HA3

Remote start T-harness for select 2008-up Honda and Acura vehicles (CMHCXA0 module also required)

Item # 794THRHA3

Find what Fits your car

Item # 794THRHA3

In stock

About the iDatastart ADS-THR-HA3

Vehicle-specific T-harness for an iDatastart remote starter

iDatastart's ADS-THR-HA3 T-harness connects their iDatastart CMHCXA0 HC remote start module to your select Honda-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.

What's in the box:

  • 17" Main T-harness (2 inline 30A ATC fuses)
  • 8" 7-pin T-harness (grey plugs)
  • 8" 7-pin T-harness (green plugs)
  • 19" 20-pin harness
  • 29" 12-pin harness
  • 29" One-wire harness
  • Two 8" optional terminal wires (pinned for Molex plug)

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More details on the iDatastart ADS-THR-HA3

Research Team

Product Research


Overview: The iDatastart THR-HA3 installation harness is designed to simplify the installation of your iDatastart CMHCXA0 remote start module (sold separately) into select 2008 - up Honda and Acura vehicles.

Installation: The iDatastart 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.

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

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Customer Q&A

2 questions already asked

I've tried numerous times using T-harness Idatalink (ADS-THR-HA3) for a 2016 Honda H-RV. No matter what I try my Compustar (RS1B-DC3) Why won't remote module just sync with vehicle??
[ Jason  Jan 15, 2021 ]
1 answer
You have too make an account on idatalink site and flash the module to your car. You need a mini usb to connect from your computer to your module.
[ ROGER  Jan 15, 2021 ]
I've tried using this harness for a 2016 Honda HRV & it won't work. Why not???
[ Jason  Jan 15, 2021 ]
3 answers
Enter an answer to thisI've tried numerous times using T-harness Idatalink (ADS-THR-HA3) for a 2016 Honda H-RV. No matter what I try my Compustar (RS1B-DC3) 1 way remote module just won't sync with vehicle. It was a very quick job & everything plugged in nice & easy. I have 5 extra wires hanging & I'm assuming they're for another vehicle type. I follow the exact steps time & time again & all I get is 1 steady blinking red indicator light & that's it. I've tried many things & vehicle just won't recognize this remote starter. I'm beyond frustrated, please help. question.
[ Jason  Jan 15, 2021 ]
This is by far the best video I've found, in the last month I must've watched it 7 times so I would be more than ready for the install a few days ago. I was thinking I had to have missed something but I haven't missed anything. I've followed everything exactly how he explained & it's soo easy which makes me even more frustrated!
[ Jason  Jan 15, 2021 ]
I installed this easily on a 2013 Honda Civic with help from the following video: Hope that helps.
[ BRIAN  Jan 15, 2021 ]

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