A TH400 relies on an electrical kickdown circuit to trigger a downshift under throttle, and a failed or missing lead means the transmission never kicks down. This harness restores that circuit with correct wire and connectors so the kickdown switch operates the way the factory intended.

Harness Details:

• Designed for TH400 automatic transmission kickdown circuits.
• Supplies the correct connectors for the kickdown switch.
• Wire colors follow factory practice for easy circuit identification.
• Suitable for restorations and TH400 transmission swaps.
• Sold individually.