Electrical Connector Caps & Covers

Ensure the Longevity and Safety of Your Electrical Systems

Our electrical connector caps and wire connector covers are the perfect solution to protect your connections from dirt, moisture, and other contaminants. Whether you’re working in automotive, marine, or industrial applications, these caps help prevent damage, corrosion, and short circuits that can disrupt your system.

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WM-8P Male Power Signal DTM TPA

Original Part Number: WM-8P

LHE Part Number: TPA10012

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 8 Position

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WM-6S Female Power Signal DTM TPA

Original Part Number: WM-6S

LHE Part Number: TPA10011

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 6 Position

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WM-6P Male Power Signal DTM TPA

Original Part Number: WM-6P

LHE Part Number: TPA10010

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 6 Position

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WM-4S Female Connector Position Assurance

Original Part Number: WM-4S

LHE Part Number: TPA10009

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 4 Position

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WM-4P Male Connector Position Assurance

Original Part Number: WM-4P

LHE Part Number: TPA10008

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 4 Position

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WM-3S Female Wire Cable Secondary Lock

Original Part Number: WM-3S

LHE Part Number: TPA10007

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 3 Position

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WM-3P Male Wire Cable Secondary Lock

Original Part Number: WM-3P

LHE Part Number: TPA10006

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 3 Position

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WM-2S Female Wire to Wire Connector Locks

Original Part Number: WM-2S

LHE Part Number: TPA10005

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 2 Position

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WM-2P Wire to Wire Connector Locks

Original Part Number: WM-2P

LHE Part Number: TPA10004

Contact Tab Size Series: TPA

Color: Orange

Number of Positions: 2 Position

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W3S-1939-P012 Locks Position Assurance

Original Part Number: W3S-1939-P012

LHE Part Number: TPA10002

Contact Tab Size Series: TPA

Color: Blue

Number of Positions: 3 Position

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W3P-1939 Connector Locks Position Assurance

Original Part Number: W3P-1939

LHE Part Number: TPA10001

Contact Tab Size Series: TPA

Color: Blue

Number of Positions: 3 Position

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12146933 Black Cover Assembly Caps

Original Part Number: 12146933

LHE Part Number: 403023

Contact Tab Size Series: Dust Cap

Color: Black

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How Connector Caps Help Prevent Corrosion

Corrosion is one of the most common and expensive issues in electrical systems—especially in vehicles, outdoor equipment, and industrial machinery. It happens when moisture, dirt, or chemicals sneak into your electrical connectors and start breaking things down from the inside. That’s where connector caps come in.

A good connector cap acts like a barrier. It seals off the open end of a connector or an unused port, keeping out water, dust, salt, and other contaminants. This small but important component helps maintain a clean, dry environment inside the connector, which is key to stopping corrosion before it starts.

Over time, even a tiny bit of moisture can cause metal contacts to rust or oxidize. In automotive or marine environments, where connectors are exposed to constant vibration and changing temperatures, corrosion can creep in fast.

Using the right wire connector caps is a simple, affordable way to avoid bigger problems down the road—like damaged wiring harnesses, fried circuits, or replacement costs for sensitive electrical components. So if you want to extend the life of your electrical systems and avoid surprise downtime or repair bills, don’t overlook the importance of a good-quality cap.

WM-8P Male Power Signal DTM TPA

Protect What Powers You

When it comes to electrical systems, even the smallest detail can make a big difference. That’s where our connector caps and wire connector covers come in. These simple add-ons help keep your wiring protected, your connections stable, and your downtime to a minimum—whether you’re in the garage, on the road, or out in the field.

Choosing the Right Protection for Your Electrical Systems

Not all protection is created equal—and not every electrical connection needs the same kind of cover. When it comes to safeguarding your connectors, it’s important to pick the right solution for your setup. Whether it’s a connector cap, a seal, or a wire cover, here’s a quick tip to help you decide:

Connector Caps

These are perfect for sealing off unused connector ports or covering exposed terminals. They’re ideal when you want to keep dirt and moisture out of places that aren’t always connected.

Best for:

  • Protecting unused ports
  • Temporary covers during maintenance
  • Blocking moisture and dust in outdoor or mobile setups
01

Seals

Seals are built into the connection itself—often in the form of rubber gaskets or ring seals inside the connector. They create a tight fit between the connector halves and help keep water and debris out when the connection is in use.

Best for:

  • Active, in-use connections
  • Environments with lots of vibration or movement
  • Long-term sealing in critical systems
02

Wire Covers

Wire connector covers are broader in shape and can cover the entire connector housing or even multiple wires. They offer additional protection against abrasion, UV exposure, and external impact.

Best for:

  • Harsh industrial or off-road environments
  • Grouped wires or large connectors
  • Protecting from physical damage
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