T56 Swap Speedometer Fix - Dakota Digital Box with Camry Cluster Swap

Transmissionintermediate✓ OP Confirmed

Problem

After a T56 manual transmission swap, the stock MK3 Supra speedometer no longer works because the T56 uses an electronic vehicle speed sensor (VSS) instead of a mechanical speedometer cable. The stock cable-driven speedo is incompatible, and the ABS system also requires a VSS signal for rear wheel speed.

No speedometer reading after T56 transmission swapABS system missing rear wheel speed inputStock cable-driven speedo incompatible with electronic VSS output

Root Cause

The T56 transmission outputs an electronic speed signal rather than driving a mechanical speedometer cable like the stock R154 or W58. The stock MK3 Supra instrument cluster speedometer requires a cable input, so a signal conversion solution and compatible gauge are needed.

Confidence

Moderate confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted February 2024 on SupraForums.com