# Ac conditioner activation input

**URL:** https://community.ecumaster.com/t/ac-conditioner-activation-input/1429
**Category:** EMU BLACK / CLASSIC
**Created:** [May 17, 2024, 4:15am UTC](https://community.ecumaster.com/t/ac-conditioner-activation-input/1429 "2024-05-17T04:15:31Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Hussain\_bo\_Hamad](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/hussain_bo_hamad/32/839_2.png) [@Hussain\_bo\_Hamad](https://community.ecumaster.com/u/Hussain_bo_Hamad)
#### Post date: [May 17, 2024, 4:15am UTC](https://community.ecumaster.com/t/ac-conditioner-activation-input/1429/1 "2024-05-17T04:15:31Z")

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Hi there all,

Regarding ac clutch parameters,

The best way to setting activation inputs  
From where to get signals, output as well  
Best wirings route from where for example pressure switch?  
If diagram available please share thanks

Please help

 ![IMG_20240517_070911](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/1X/6f3a7d5be4e102cbb99bdbbb053ac6cf56141b22.jpeg)

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### Author: ![Greg](https://avatars.discourse-cdn.com/v4/letter/g/71c47a/32.png) [@Greg](https://community.ecumaster.com/u/Greg)
#### Post date: [May 17, 2024, 7:56am UTC](https://community.ecumaster.com/t/ac-conditioner-activation-input/1429/2 "2024-05-17T07:56:47Z")

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pressure switch output to the activation switch and this will also act as pressure sensor so you need to select for example can analogue assign it as ac pressure and make sure calibration is on this area between min and mac ac pressure

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### Author: ![Hussain\_bo\_Hamad](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/hussain_bo_hamad/32/839_2.png) [@Hussain\_bo\_Hamad](https://community.ecumaster.com/u/Hussain_bo_Hamad)
#### Post date: [May 17, 2024, 3:43pm UTC](https://community.ecumaster.com/t/ac-conditioner-activation-input/1429/3 "2024-05-17T15:43:07Z")

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Still not clear greg do you have a working parameter example input and output and input from this switch & output as well and what ecu will receive 0v or 12v as input or output will voltage will give.

Can this be done from this switch below it has three wires on will read if ac compressor is of 0.1v ac on 0.21v  
Other One ground third on 12v.

I need the ecu to know if the ac conditioner is on to raise rpm that’s all.  
The ac already working.

 ![Screenshot_20240516_225508_com.huawei.himovie.overseas](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/1X/e575d64194814ac344eee91478a62df7b35f8a7a.jpeg)

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### Author: ![marcinkorbec](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/marcinkorbec/32/442_2.png) [@marcinkorbec](https://community.ecumaster.com/u/marcinkorbec)
#### Post date: [July 19, 2026, 10:53pm UTC](https://community.ecumaster.com/t/ac-conditioner-activation-input/1429/4 "2026-07-19T22:53:07Z")

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Did you manage to solve the problem? I was wondering about this too. I’m going to install Emu Black in a fairly new 2017 car and I was wondering if the car would stall when the air conditioning was turned on, or if the AFR would become too lean when the air conditioning was running at idle.

I saw that there are functions in Black (functions tab) and using the function you could read whether the compressor clutch is on, but I haven’t tried it and I don’t know if you can use the function to increase the RPM or enrich the AFR as a function return

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### Author: ![sourcerer](https://avatars.discourse-cdn.com/v4/letter/s/45deac/32.png) [@sourcerer](https://community.ecumaster.com/u/sourcerer)
#### Post date: [July 20, 2026, 4:12pm UTC](https://community.ecumaster.com/t/ac-conditioner-activation-input/1429/5 "2026-07-20T16:12:20Z")

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Quick and dirty way to get an activation signal from the A/C clutch power feed