# Share Temperature Sensors between EMU and Dash

**URL:** <https://community.ecumaster.com/t/share-temperature-sensors-between-emu-and-dash/3016>\
**Category:** GENERAL\
**Created:** [January 6, 2025, 7:38pm UTC](https://community.ecumaster.com/t/share-temperature-sensors-between-emu-and-dash/3016 "2025-01-06T19:38:45Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![derUltraTT](https://avatars.discourse-cdn.com/v4/letter/d/ba8739/32.png) [@derUltraTT](https://community.ecumaster.com/u/derUltraTT)\
**Post date:** [January 6, 2025, 8:58pm UTC](https://community.ecumaster.com/t/share-temperature-sensors-between-emu-and-dash/3016/2 "2025-01-06T20:58:22Z")

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Basically it is possible, but i learnd it comes with issues.  
In this thread the topic was discussed:

> [@Analog signal sharing](https://community.ecumaster.com/t/analog-signal-sharing/2349/6):
>
> Update: I did some wild wild west updates on my wiring: Connected both ECU grounds moved 12V for emu further away from battery → Now i have a stable reading in OEM ECU on my two problem sensore (brake vacuum sensor and clt) Thx guys for help partying_face

U should choose a main ECU for each sensor and connect sensors ground + voltage supply to it and just rout the signal line to the second ECU (to a high resistance input). Both ECUs should have a common main ground or wire to connect both grounds as short as possible (same for 12V supply for both ECUs). Wired like that the main ECU will have a good reading of the signal…the second ECU will have a slightly corrupted reading depending on ur grounding situation.

If u connect sensor grounds of both ECUs or try to connect supply voltage for the sensors of both ECUs u will corrupt the signal for both ECUs.

But i think u should try to avoid doing it like that…just if u don’t have an other option. Best way would be share signals via CAN.

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_[View the full topic](https://community.ecumaster.com/t/share-temperature-sensors-between-emu-and-dash/3016)._