Seachoice 7-Way to 4/5-Way Trailer Connector Adapter – 8" Lead Wire (50-13831)
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You have 30 days to request a return. All sale items are final sale.
Overview
The Seachoice 50-13831 7-Way to 4/5-Way Trailer Connector Adapter features an 8-inch flexible lead wire that connects a vehicle's 7-way blade-style connector to a boat or utility trailer's 4-way or 5-way flat plug. The 8-inch lead provides additional routing flexibility compared to a compact plug-style adapter, making it easier to connect in tight hitch areas. The molded connector body resists corrosion and mechanical breakdown, and built-in grip tabs make plugging in and disconnecting quick and secure.
Features
- Adapts a 7-way blade vehicle connector to a 4 or 5-way flat trailer plug
- 8-inch flexible lead wire for added routing flexibility at the hitch
- Molded connector body for durability and corrosion resistance
- Built-in grip tabs for easy plug-in and disconnect
- Blade-type 7-way connector on the vehicle side
- No wiring modifications required — plug-and-play installation
Best Use Cases
- Towing a boat or utility trailer with a 4 or 5-way flat connector from a truck or SUV with a 7-way blade outlet
- Hitch areas where a compact plug-style adapter is difficult to grip or connect — the 8-inch lead provides easier handling
- Replacing a worn or damaged 7-way to 4/5-flat adapter on an existing tow setup
Connector Compatibility
- Vehicle side: 7-way blade connector (standard on most trucks and SUVs)
- Trailer side: 4-way flat or 5-way flat connector
- Lead wire length: 8 inches
Related Trailer Connector Adapters
- Seachoice 7-Way to 4/5-Way Compact Adapter (50-13811) — plug-style, no lead wire
- Seachoice 7-Way Round to 5-Way Flat Cable Adapter – 18" (50-13821) — longer cable for extended reach
Parts Desk Insights
Best Use Case: This is the best recommendation when a customer needs a 7-way to 4/5-flat adapter but finds a compact plug-style adapter awkward to connect at their hitch — the 8-inch lead wire gives enough slack to handle the connection comfortably. It sits between the compact 50-13811 and the longer 18" cable adapter (50-13821) in terms of reach.
Adapter Comparison: All three Seachoice 7-way adapters handle the same connector mismatch. Guide customers by lead length: no cable needed → 50-13811; moderate reach needed → this adapter (50-13831, 8"); maximum reach needed → 50-13821 (18").
Fitment Note: This adapter handles lighting circuits only (running lights, brake lights, turn signals, ground). It does not pass through the 7-way's electric brake, auxiliary power, or reverse light circuits. If the customer's trailer has electric brakes or requires auxiliary power, a full wiring harness solution will be needed.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.