Why Do Some 7-way Plugs Use Dual Contact Surfaces
Updated 05/14/2019 | Published 05/11/2019 >
Products Featured in This Question
Question:
This is a follow-up question to the Bargman question I asked on about April 16th, 2019. Please reference pictures included. The molded plug end of the blue cable # 54006-059 I received SEE TYEE BB is different from the plug end sent to be installed on the wire end of the cable SEE TYPE AA. The referenced prepared cable double ended 8’ long #50-67-210 with the two 2 molded ends appears to have on both ends, the same type of plug. SEE TYPE BB-This is a guess as I can barely make out the cable ends. I’m confused ? Please explain the difference between the “pinch” connectors on one end and.the “blade” connectors on the other end.
asked by: Robert
Expert Reply:
A 7-way (female) vehicle socket like # PK12-707E has a single blade contact; these fit in between the dual contact surfaces in a (male) trailer plug like # 54006-059, # 277-000143 or # A10-7W10 and the connector (type BB) shown in your photo.
Some 7-way male plugs will use a single blade contact, such as the plug on Hopkins 7-way extension # HM20049. This item's female socket and male plug happen to both use the single contact. Both types are compatible with each other.
The Bargman Double-Ended 7-Way Molded Trailer Connector # 50-67-210 has two male ends and happens to use the dual-contact plugs on both ends.

Product Page this Question was Asked From
Bargman 7-Way, RV-Style Connector w/ 10' Heavy Duty Insulated Cable - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 7 Blade
- Plug and Lead
- Bargman
more information >
Continue Researching
- Shop: Trailer Wiring
- Video: Checking Out the Buyers Products 10" Wheel Chock w/ 3-1/2" Handle
- Shop: Buyers Products 10" Wheel Chock w/ 3-1/2" Handle - Heavy Duty Rubber - Qty 1
- Shop: Optronics 7-Way Trailer Harness Plug Protector
- Search Results: trailer paint
- Search Results: wheel chocks
- Q&A: Trailer Brakes Work on Some Trailers But Not Others When Towing with 2008 Chevrolet Duramax Dually
- Shop: Hopkins Endurance Universal 5th Wheel/Gooseneck 7-Way RV Extension Cord - 8' Long
- Shop: Bargman 7-Way, RV-Style Connector w/ 10' Heavy Duty Insulated Cable - Trailer End
- Shop: 7-Way Molded Trailer End with 6' Cable - HD Blue Insulated
- Shop: Pollak Black Plastic, 7-Pole, RV Blade-Style Trailer Socket - Vehicle End
- Q&A: What is the Difference Between 7-Way RV and Utility Trailer Connectors
- Shop: Mighty Cord 7-Way RV-Style Trailer Connector w/ Molded Cable - Trailer End - 10' Long
- Search Results: 7 way molded
- Search Results: side marker lens
- Search Results: marker light sealed led
- Search Results: marker light
- Search Results: equalizer
- Shop: Trailer Hitch
- Video: The Low-Down on the 7-Way Molded Trailer Wire Connector, 4' Long
- Video: Performance Tool Crimping Pliers Review
- Video: Hands-On with the 7-Way Molded Trailer Wire Connector, 4' Long
- Video: BoatBuckle Boat Winch Strap with Latch-Lok Hook Spec Review
- Q&A: What Gauge Wires are Used Epicord 7-way Connector part # e99010
- Shop: Suspension Enhancement
- Video: Feature Breakdown: 7-Way Round RV Style Trailer Connector
- Q&A: Replacement Reverse Light for Ranger z521 Boat Trailer
- Q&A: Replacement Marker/Clearance Lights For a 2006 Ranger Trail Boat Trailer
- Q&A: Is iN-Command TPMS Compatible With 2022 Chevrolet Silverado 3500 Smart Trailering
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)