Conversion harnesses that include VSS outputs make speedometer integration smooth

https://deancbgm767.bearsfanteamshop.com/deciphering-ls-swap-harnesses-how-to-pick-customize-and-install-the-right-wiring-loom-for-your-build

Conversion harnesses that include VSS outputs make speedometer integration smooth, feeding both the PCM and the vehicle’s dash or standalone speedo.