W3P WEDGELOCK BLUE 1939

Deutsch DT 3-Way Wedge Lock blue (1939-coded) — Dt Connector Contact Retention Component

The W3P-1939 is a 3-way blue (1939-coded) Deutsch DT wedge lock for the DT connector connector body. The DT wedge lock is a secondary contact retention and wire seal locking component that is inserted into the rear of the DT connector body after contacts are inserted and seated, locking the contacts in position and locking the wire seals against the connector body to prevent moisture ingress and contact pullback under cable tension. A DT connector is not fully assembled — and does not meet its IP67 sealing specification — until the wedge lock is correctly seated.

Why the Wedge Lock Is Critical in Deutsch DT Assembly

The Deutsch DT contact retention system uses two independent locking mechanisms: the primary lock built into the contact landing in the connector body, and the secondary lock provided by the wedge lock. The primary lock holds each contact under normal conditions; the wedge lock provides additional mechanical retention that prevents contact pullback under sustained cable tension, vibration loads, and repeated mating cycles that can gradually back out the primary lock. Without the wedge lock seated, a DT connector can lose contacts during service and lose its IP67 environmental seal rating — two failure modes that can result in intermittent circuit faults and moisture-related damage in a motorsport harness.

Colour Coding — DT Wedge Lock Variants

Standard grey DT wedge locks are the baseline product. Blue (1939-coded) wedge locks are used in specific DT connector variants where a coloured component provides visual identification of the connector specification or is required by the connector series design.

Available from Arctic Performance Parts

Arctic Performance Parts stocks Deutsch DT wedge locks in 2-way, 3-way, and 4-way formats, in standard grey, blue, and green variants, for both plug and receptacle bodies. Supporting professional motorsport harness builders across Norway, Sweden, and Denmark. Lead time 1–2 weeks for quantities beyond current stock.