Supra Tachometer Bypass - Making my Tach work

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This is what I used:
amzn.to/3zDQPMQ - Ninja Solder Iron
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Instagram: @carmodsgarage
Twitter: @garage_mods
Building cars for fun.

[@Crotal_Karma]

Good job!👍

[@CarModsGarage]

🙏

[@BMWE30RESTORATION]

congr!!Which contacts from speeduino go to the tachometer?

[@CarModsGarage]

I use SpeedyEFI ECU which is Speeduino based. The SpeedyEFI pin was 23 from the 24 pin connector but I have no idea what that connects to on the speeduino