This circuit tester plugs into the 7-way connector on your vehicle. LED lights indicate which functions (brake, turn, tail, stop, reverse, electric brakes, and 12V) are properly working. Color-coded ... Features: 7-Way connector tester plugs into your vehicle's wiring harness to confirm your lights are functioning Tests tail lights, brake lights, turn signals, reverse lights, electric brakes
This circuit tester plugs into the 7-way connector on your truck. LED lights indicate which functions (brake, turn, tail, stop, reverse and 12V) are properly working.Features: 7-way circuit tester 12V power Function Codes: BU: back up or reverse circuit center pole RT: right turn/brake TM: taillights LT: left turn/brake BK: brake controller output 12V: 12-volt
Circuit tester plugs into your 4-way flat trailer wiring harness and identifies lighting problems. Labeled LED lights illuminate to show which functions are working properly.Features: Circuit tester plugs into your trailer's wiring harness to check the conductivity of all the circuits between your vehicle and your trailer Quickly identifies lighting problems Labeled
This tester helps you to quickly identify problems in your trailer wiring. It tests the left turn, right turn, tail/marker, brake and backup circuits to indicate the level of current in each circuit ... battery) connected to the trailer charge circuit Includes charger for the internal battery of the trailer tester Works with 7-way trailer connector Adapters (sold separately) allow use with 4-pole, 5-pole
Test, plug in, go. The LED tester confirms your wiring, then you connect from 7 Blade to 4 Flat so every signal is ready before you tow.Highlights Built-In LED Tester: Verifies wiring continuity at a glance. 7 Blade to 4 Flat: Adapts vehicle socket to trailer plug. Plug-In Setup: Connects without wiring. Reliable Signals: Supports
Curt LED 4-Way Flat Connector Tester This circuit tester plugs into the four-way trailer connector on the vehicle. The bright LED lights analyze the trailer connections and indicate which functions
Testers
Tow Function Tester
Black
CURT
New Arrivals — From Our Shop to You!
Chosen by folks who live and breathe this, just like you.
New Arrivals — From Our Shop to You!
Chosen by folks who live and breathe this, just like you.
A circuit tester that plugs into the 7-way trailer connector on the vehicle and emulates a trailer. The lights let you know what functions (brake, turn, tail, stop, reverse and 12V) are working ... Features: 7-way circuit tester 12V power Function Codes: BU: back up or reverse circuit center pole RT: right turn/brake TM: taillights LT: left turn/brake BK: Brake controller output 12V: 12-volt
You're lining up the trailer in the driveway when you realize the plug doesn't match. No time to rewire. You grab the adapter, plug it in, and the lights fire up. Quick fix, solid connection, and you're back on schedule.Highlights 4-Way to 7-Blade Conversion: Adapts your vehicles 4-way flat to a 7-blade trailer connector. Plug-In Ready: No cutting or splicing needed. Built-In Wire Tester: Confirms function before
You're wiring up a trailer and need to know it's done right. This 7-way plug lights up to show which signals are live the second you connect. You crimp it, test it, and roll out knowing everything works.Highlights 7-Blade Connector: Standard trailer-end plug for lights, brakes, and power. Built-In LED Tester: Confirms active signals during hookup. Screw Terminals: Accepts blunt-cut wires for easy
4-1/2" x 5-3/8" Square trailer tail light is submersible. Integrated LEDs indicate if there's a fault in your trailer wiring. For trailers less than 80" wide. Includes industry-standard 3-prong plug. DOT and SAE compliant.; apart on center Wire configuration: White: ground Red: stop/turn light Black: tail light Harness length: 10" 10-Year limited warranty Built-In LED Testers Verify Connection The Hopkins Smart Light
You're chasing a light issue with no clue if it's the truck or trailer. You plug in the tester, hit the blinkers, and the LEDs show what's live. No guesswork. Just answers before you ... Highlights 4-Way Circuit Tester: Checks power output on standard 4-flat vehicle connectors. Instant LED Feedback: Lights up to show turn signals, brake lights, and running lights. Plug-In Design: No
From under-dash tangles to trailer wiring headaches, this circuit tester helps you zero in on electrical issues fast. It hooks on, lights up, and powers through the job without slowing you down. and easy to take on the go Features to know about Test Light for Everyday Diagnostics Perfect for checking fuses, wires, and connectors, this tester helps you quickly track down power issues in 6V and
You've got a 4-flat on the vehicle and a 7-way on the trailer. No time to rewire. You grab this adapter, plug it in, and the built-in lights confirm the signals are live. Now you just need to load up and hit the road. converts your 4-flat vehicle wiring to fit a 7-way trailer plug. It's a plug-and-play solution for light-duty towing. The built-in LED tester confirms that brake lights, taillights, and turn signals are
You're sorting out a trailer light issue and don't want to rip everything apart. This loop lets you test wiring fast. Plug it in, check the LEDs, and see what's working. Saves time and frustration.Highlights 4-Way Flat Loop: Connects trailer and vehicle wiring or serves as a test lead. Built-In LED Tester: Lights indicate active circuits when plugged into vehicle. 12" Length: Short
This circuit tester plugs into the 6-way connector on your vehicle. LED lights indicate which functions (brake, turn, tail, electric brakes, and 12V) are properly working.Features: 6-Way connector tester plugs into your vehicle's wiring harness to confirm your lights are functioning Tests tail lights, brake lights, turn signals, electric brakes, and auxiliary
You're rewiring a trailer from scratch or cleaning up a mess of splices. This 7-way gives you a fresh cable, sealed jacket, and built-in test lights. You wire it once, plug it in, and know its good. All that's left is to head out.Highlights 7-Blade Connector: Standard plug for trailer lights, brakes, and 12V power. LED Tester Built In: Lights confirm signal function during hookup. Jacketed Cable: Sealed 72" wiring
Replacement tester for Hopkins Tow Doctor Trailer End Test Unit (HM50928) Allows one person to check that trailer wiring and functions are working correctly Tests all trailer functions: right turn
Easily disconnect this 4-way flat trailer-end plug from your vehicle without damaging the terminals. Large grip ring provides maximum leverage when disconnecting. Built-in LED lights illuminate to verify power. Splices into your trailer's wiring.
The trailer lights are flickering again. You've replaced bulbs, checked grounds, and still no luck. Time to swap the plug. This 4-way flat connector comes with a built-in tester and 24 inches of ... Highlights 4-Way Flat Plug: Standard trailer-end connector. 24" Bonded Wire Lead: 18-gauge wire for stop, turn, and taillights. Built-In Wire Tester: Lets you verify light function during
This circuit tester plugs into the 5-way trailer connector on your vehicle. The bright LED lights indicate which functions (tail lights, brake lights, turn signals, and reverse lights) are working ... Features: 5-Way connector tester plugs into your vehicle's wiring harness to confirm your lights are functioning Tests tail lights, brake lights, turn signals, and reverse lights Labeled LED
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