Deutsch DTM Connectors

Deutsch DTM Connectors are the motorsport standard for sensor wiring, ECU signal circuits, and data logging harnesses. The DTM Series accepts Size 20 contacts (20–24 AWG / 0.2–0.5 mm²) rated at 7.5 amps per circuit, in cavity counts from 2 to 12. IP67-sealed thermoplastic housings operate from −55 °C to +125 °C — reliable on engine bays, transmission tunnels, and anywhere exposure to heat, oil, and vibration is unavoidable. XTRA Motorsport stocks genuine TE Connectivity Deutsch DTM connectors with shipping across the EU.

Technical Specifications

Property Value
Contact size Size 20
Rated current 7.5A per contact
Wire range 20–24 AWG (0.2–0.5 mm²)
Cavity options 2, 3, 4, 6, 8, 12
IP rating IP67
Operating temperature −55 °C to +125 °C
Mating cycles 100 minimum (no electrical or mechanical defect)
Housing material Thermoplastic
Sealing Silicone wire seals + face seal
Contact plating Nickel or Gold
Locking Integrated latch + wedgelock

DTM vs DT vs DTP — Which Series Do You Need?

DTM Series DT Series DTP Series
Contact size Size 20 Size 16 Size 12
Current per circuit 7.5A 13A 25A
Wire range 20–24 AWG (0.2–0.5 mm²) 14–20 AWG (0.5–2.0 mm²) 12–14 AWG (2.0–3.0 mm²)
Cavity options 2, 3, 4, 6, 8, 12 2, 3, 4, 6, 8, 12 2, 4, 6
Typical application Sensors, signal circuits General harness wiring Power circuits

Choose DTM for sensors, lambda probes, thermocouples, or any low-current signal circuit using 20–24 AWG wire at up to 7.5A per pin.
Choose DT for injectors, solenoids, actuators, or higher-current circuits on 14–20 AWG wire.
Choose DTP for battery feeds, alternators, or high-current power runs on 12–14 AWG wire.

Contact Plating — Nickel vs Gold

Nickel contacts Gold contacts
Best for Power, ground, high-current signal Low-level sensor signals, ECU data
Contact resistance Standard Lower (better for mV-level signals)
Corrosion resistance Good Excellent
Cost Lower Higher

Gold-plated contacts are recommended for thermocouple, lambda, and any circuit where millivolt-level accuracy matters. Nickel contacts are suitable for standard switched circuits and power.

What’s in the Range

  • Plugs (DTM06) — socket / female contact housings, 2 to 12 way
  • Receptacles (DTM04) — pin / male contact housings, 2 to 12 way
  • Contacts (Size 20) — nickel or gold plated, sold individually
  • Wedgelocks — lock contacts in position and complete the rear seal
  • Complete kits — plug + receptacle + contacts + wedgelocks in one package

Every connector requires matching contacts and a wedgelock to be complete. Contacts and wedgelocks are stocked separately.

Applications

Deutsch DTM Connectors are the first choice for motorsport signal and sensor wiring:

  • Engine management — knock sensors, camshaft and crankshaft sensors, MAP sensors, throttle position sensors
  • Data logging harnesses — thermocouple inputs, pressure transducers, potentiometers
  • Transmission and drivetrain — gear position sensors, oil temperature, speed sensors
  • ECU and PDM connectivity — data signal inputs and low-current outputs
  • Marine and industrial — sealed signal wiring in harsh, high-vibration environments

FAQ

What is the difference between Deutsch DTM and DT connectors?

DTM uses Size 20 contacts for 20–24 AWG wire at 7.5A per circuit. DT uses Size 16 contacts for heavier 14–20 AWG wire at 13A. Use DTM for sensors and signal wiring; use DT for actuators, solenoids, and higher-current circuits.

What is the current rating of Deutsch DTM connectors?

7.5 amps per contact at +125 °C continuous, using Size 20 contacts. This covers the full range of motorsport sensor and signal applications.

What wire gauge do Deutsch DTM connectors accept?

Size 20 contacts are rated for 20–24 AWG (0.2–0.5 mm²). Use the correct contact for your wire cross-section — the crimp barrel is sized for this range.

Should I use nickel or gold contacts?

Gold contacts are recommended for sensor signals where low contact resistance matters — thermocouples, lambda sensors, precision inputs. Nickel contacts are suitable for standard switched circuits and digital signals.

Are Deutsch DTM connectors waterproof?

Yes. The DTM Series is rated IP67 — protected against temporary immersion up to 1 metre for 30 minutes. Silicone wire seals and the face seal create a fully closed environmental barrier when the wedgelock is correctly fitted.

Do I need a wedgelock?

Yes. The wedgelock locks contacts in their cavities and completes the rear environmental seal. A connector without a fitted wedgelock is not fully sealed and contacts can be displaced under vibration.

Where can I buy Deutsch DTM connectors in Europe?

XTRA Motorsport stocks a full Deutsch DTM range — plugs, receptacles, contacts in nickel and gold, and wedgelocks — dispatched from EU stock via DHL/UPS across the EU.

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