Swap from standard hvac controls to auto unit?

bauer311

Supporting Member
VIP Member
3,181
2,204
Fayetteville, NC
Vehicle Model
Civic Si
Body Style
Sedan
Hey guys,

I have a 2015 si sedan. I have the standard hvac unit in the car right now. I loved having the auto unit in my ex coupe. I see there are some cheap auto units on ebay...are the hvac units interchangeable?
 
Short answer to this is yes, the digital climate control can be made to work. But the AUTO part is not possible without some serious rewiring, besides the humidity sensor.
The auto function needs access to the outside temperature sensor and sunlight sensor on the dash. Both of which use a "polling" method of reading the sensor data. So a simple wire tap will not work.
A "simple crossover" harness is all that is needed to make the digital part work. Or you could re-pin the factory harness to make it work as well....DIY coming this weekend...

 
Ok, so i would need the harness as well. Hmmm. Maybe a project for a rainy day... or a few, lol.
 
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