Optronics A75TC 5-Flat to 7-Round Single Piece Wiring Adapter

The Optronics A75TC is a 5-flat to 7-round wiring adapter that converts a vehicle's 7-way round blade trailer connector to a 5-way flat pin connector, letting a tow vehicle and trailer with mismatched plug styles connect without rewiring either end. It is built as a single molded piece rather than a harness with separate connector housings, which keeps the adapter compact and reduces the number of joints that can loosen or corrode in outdoor use. The adapter is designed for fleet and plant maintenance applications where quick, reliable connector conversion is needed between mixed trailer and tow vehicle wiring standards.

Each unit ships as a single adaptor plug packaged in a retail clam pack, with one port for a straightforward 7-way-to-5-way conversion, and is backed by a three year warranty. Its compact 1 x 1 x 1 inch footprint makes it easy to store in a truck cab or tool box for on-the-go connector changes.

Specifications

• Brand: Optronics
• Manufacturer Part Number: A75TC
• Connector Conversion: 7-Way Round Blade to 5-Way Flat Pin
• Construction: Single molded piece
• Number of Ports: 1
• Package Quantity: 1 adaptor
• Item Dimensions: 1 x 1 x 1 inches
• Weight: 0.26875 pounds
• Case Pack Quantity: 12
• Packaging: Retail clam pack
• Warranty: Three Year Warranty
• UPC: 047286377587

Fitment

Universal adapter for connecting a 7-way round blade trailer wiring connector to a 5-way flat pin connector; not specific to a single vehicle make or model.

Replaces (OEM)

No OEM cross-reference numbers are published for this part.

Frequently Asked Questions

What does the Optronics A75TC adapter do? The Optronics A75TC converts a vehicle's 7-way round blade trailer connector into a 5-way flat pin connector, allowing a tow vehicle and trailer with different connector styles to be wired together without modifying either connector.

Is the A75TC a single connector or a full wiring harness? It is a single molded piece adaptor plug, not a multi-piece harness, so there are no separate connector housings to join or wire together.

How many ports does the A75TC adapter have? The A75TC has 1 port, matching its role as a direct plug-and-play connector between the 7-way round and 5-way flat systems.

What are the dimensions of the A75TC adapter? The A75TC measures 1 x 1 x 1 inches, a compact size suited to glove box or tool box storage.

How much does the Optronics A75TC weigh? The A75TC weighs 0.26875 pounds.

What warranty comes with the A75TC? The Optronics A75TC is backed by a three year warranty.

How is the A75TC packaged? Each Optronics A75TC ships as a single adaptor in a retail clam pack.

Does the A75TC fit a specific vehicle make or model? No, the A75TC is a universal 5-flat to 7-round wiring adapter and is not limited to a specific vehicle make, model, or year.

What is the difference between the A75TC and the A75TC6? Both are single-piece, clam-packed 5-flat to 7-round adapters, but they are sold under different case pack quantities as separate catalog items, so the A75TC and A75TC6 are ordered by their distinct part numbers depending on the case quantity needed.

Is the A75TC genuine Optronics or aftermarket? The A75TC is a genuine Optronics part, manufactured and warrantied directly by Optronics rather than being a generic aftermarket substitute.

What comes in the box with the A75TC? The package includes one Optronics A75TC single-piece 5-flat to 7-round adaptor plug in retail clam packaging.