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Boat Trailer Wiring Circuit Testers

9 Items
4-Pole Flat Lead Tester
While using your tow vehicle it is highly important to know that the connector used is functioning properly. Improper wiring of the connector can …
List price: $8.69
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Wesbar Circuit Testers
The Wesbar Circuit Testers are a must-have tool in your trailer for checking the continuity of electrical circuits. These are 4-way, 5-way and 7-way …
List price: $14.49
Starting at $8.62
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7-Way Blade to 4 or 5 Flat with LED Circuit Tester - Cequent Trailer Products - Wesbar
Easily adapt OEM 7-way blade connector to either 5-flat or a 4-flat connector, patent pending. Instantly checks electrical circuit for connectivity. …
List price: $20.85
Only $13.59
In stock
Seasense EZ Trouble Shooter 4-Way Circuit Tester
Plug tester into vehicle's 4-way flat towing plug. Operate vehicles turn signals, lights and brakes. When power is present, that circuit's green …
List price: $4.79
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Seachoice Circuit Tester
Features: Used to locate grounds, open circuits and shorts Can be used with 6 or 12 volt systems 8" long wire with alligator clips.
List price: $9.45
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4 Way Flat Tester (Anderson Marine)
Tester plugs into connector of tow vehicle and illuminates when the electrical connections are correct. Tests to SAE standards on flat 4-way …
List price: $5.79
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In stock
Trailer Connection Tester (Wesbar)
For all 4 pole flat boat trailer plugs. Tests tail, stop/turn and ground connection.
List price: $12.19
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4 Way Trailer Plug Circuit Tester with Cap - Seachoice
Tester plugs into tow vehicle and LED illuminates to show if connections are correct and working.
List price: $4.95
Starting at:
In stock
Conforms to all applicable SAE NMMA and TMA standards. Has 5' blue wire (auxiliary circuit) & a 4' white wire (ground).
List price: $5.69
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9 Items
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