# Launch control 2 step
**URL:** https://community.ecumaster.com/t/launch-control-2-step/3484
**Category:** GENERAL
**Created:** [April 7, 2025, 12:24am UTC](https://community.ecumaster.com/t/launch-control-2-step/3484 "2025-04-07T00:24:19Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Is300](https://community.ecumaster.com/u/Is300)
#### Post date: [April 7, 2025, 12:24am UTC](https://community.ecumaster.com/t/launch-control-2-step/3484/1 "2025-04-07T00:24:19Z")
Trying to activate my launch control, but not tunner close to me.
So doing by remotely tune.
But for launch control they say i need temporary switch, to activate, but tunner doesn’t explaining how to do the switch, i know something is connected to the clutch signal, but not sure, can anyone in here explain me , how to do that switch, connect, ground and ??? On where.
I have ecu master switch 1 wire connected already, i just need know if the ground goes to the power ground of the ecu master or any ground on the car chassis?
Thanks i. Advance
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### Author:  [@Benrebuilds](https://community.ecumaster.com/u/Benrebuilds)
#### Post date: [April 8, 2025, 9:25pm UTC](https://community.ecumaster.com/t/launch-control-2-step/3484/2 "2025-04-08T21:25:39Z")
Goes to signal ground on the emu
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### Author:  [@shyam](https://community.ecumaster.com/u/shyam)
#### Post date: [April 9, 2025, 8:30pm UTC](https://community.ecumaster.com/t/launch-control-2-step/3484/3 "2025-04-09T20:30:23Z")
Black connector, pin B29 B38 B39 Sensor Ground (if this is EMU Black)
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### Author:  [@Is300](https://community.ecumaster.com/u/Is300)
#### Post date: [April 9, 2025, 10:31pm UTC](https://community.ecumaster.com/t/launch-control-2-step/3484/4 "2025-04-09T22:31:06Z")
Ttthanks you so much very appreciate