# V3 Classic choose wich input the CLT and IAT uses

**URL:** <https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123>\
**Category:** V3 SOFTWARE\
**Created:** [July 3, 2026, 7:39pm UTC](https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123 "2026-07-03T19:39:04Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Kirsten.killie7](https://avatars.discourse-cdn.com/v4/letter/k/50afbb/32.png) [@Kirsten.killie7](https://community.ecumaster.com/u/Kirsten.killie7)\
**Post date:** [July 3, 2026, 7:39pm UTC](https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123/1 "2026-07-03T19:39:04Z")

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Good day.

I hope we can add the functionality to change what input the IAT and CLT uses like in the v2 classic.

unfortunately i cant use the dedicated inputs in v3 because internal pullups because they share with the OEM ecu.

hope to test v3 soon with this added!

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**Author:** ![noobtuner](https://avatars.discourse-cdn.com/v4/letter/n/e274bd/32.png) [@noobtuner](https://community.ecumaster.com/u/noobtuner)\
**Post date:** [July 3, 2026, 9:37pm UTC](https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123/2 "2026-07-03T21:37:42Z")

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Can they not be disabled for this wiring configuration on a CLASSIC? Mine are both spliced from OE ECU and I have them disabled using V3 on a BLACK.

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**Author:** ![Kirsten.killie7](https://avatars.discourse-cdn.com/v4/letter/k/50afbb/32.png) [@Kirsten.killie7](https://community.ecumaster.com/u/Kirsten.killie7)\
**Post date:** [July 3, 2026, 11:01pm UTC](https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123/3 "2026-07-03T23:01:13Z")

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On the black v3 software you can disable it, but not on the classic v3 software unfortunately.

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**Author:** ![Jadzwin\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/jadzwin_ecumaster/32/28_2.png) [@Jadzwin\_ECUMASTER](https://community.ecumaster.com/u/Jadzwin_ECUMASTER)\
**Post date:** [July 8, 2026, 8:57pm UTC](https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123/4 "2026-07-08T20:57:36Z")

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In Black the pullups are software controlled. In Classic the pullups are fixed.

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**Author:** ![Jadzwin\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/jadzwin_ecumaster/32/28_2.png) [@Jadzwin\_ECUMASTER](https://community.ecumaster.com/u/Jadzwin_ECUMASTER)\
**Post date:** [July 8, 2026, 8:57pm UTC](https://community.ecumaster.com/t/v3-classic-choose-wich-input-the-clt-and-iat-uses/6123/5 "2026-07-08T20:57:53Z")

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I will add such option for classic