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Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End

Retail: $30.42
Our Price: $19.90
In Stock
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
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • CURT

Pollak 7-Way to RV Socket LED Circuit Tester - Vehicle End

Retail: $59.17
Our Price: $37.57
In Stock
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
  • Testers
  • Tow Function Tester
  • Circuit Tester
  • Black
  • Pollak

Brophy Circuit Tester for 4-Pole Flat Trailer Connector

Our Price: $14.66
In Stock
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
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • Black
  • Brophy

Brophy 4- and 5- Way Flat Circuit Tester

Retail: $23.62
Our Price: $21.30
In Stock
This Brophy electrical tester works for both 4- and 5- way flat trailer wiring harnesses.Features: 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 Can be left attached to
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • Black
  • Brophy

Curt LED 5-Way Flat Circuit Tester - Vehicle End

Retail: $11.61
Our Price: $7.94
In Stock
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
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • CURT

Curt 6-Way Round LED Circuit Tester - Vehicle End

Retail: $12.95
Our Price: $8.90
In Stock
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
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • 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.

Andrew
Andrew etrailer team member
Andrew etrailer team member

4

Years

|

356

Installations

3,320

Customers Helped

Any questions? Chat us from Missouri

Hopkins Tow Doctor Trailer End Test Unit

Retail: $637.69
Our Price: $499.07
In Stock
auxiliary power Trailer lights illuminate and LED bulbs light on the tester to show function operation Adapts to 4-Flat, 6-Pole Round, or 7-Way RV Blade Includes battery terminal clips Amperage meter shows
  • Testers
  • Tow Function Tester
  • Hopkins

Tekonsha Trailer Wiring Circuit Tester

Retail: $690.99
Our Price: $435.51
In Stock
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
  • Testers
  • Circuit Tester
  • Tekonsha

Hopkins Tow Doctor Vehicle End Test Unit - HM50918

Retail: $366.79
Our Price: $279.71
In Stock
  • Testers
  • Tow Function Tester
  • Hopkins

Hook Probe Circuit Tester

Retail: $25.50
Our Price: $11.55
In Stock
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.: Electrical systems: 6V and 12V DC Compatible with cars, trucks, trailers, and motorcycles Tester Type: Wire-piercing molded hook probe Test Lead: Length: 4 feet Insulated, oil and heat-resistant cord Lighting
  • Testers
  • Circuit Tester
  • Performance Tool

Performance Tool W2973C 6/12V Circuit Tester 'n Probe Light for Cars, Trucks, Tractors & RVs

Our Price: $7.95
In Stock
Quickly check circuits and wire function with this Performance Tool 6 to 12V tester. Designed for automotive electrical systems, it features an insulated piercing probe and an alligator-clip lead for ...
Ideal for diagnosing automotive wiring, fuses, and electrical functions Specs: Application: Automotive 6V and 12V electrical systems Tester type: Piercing probe circuit tester Test lead: Integrated with
  • Testers
  • Circuit Tester
  • Performance Tool

LCD Digital Circuit Tester

Retail: $38.72
Our Price: $26.24
In Stock
Features: Economy LCD Circuit Tester with LED back light Ideally used to detect power, voltage, ground, and circuit integrity Surge protected circuitry displays DC voltage from 3V to 48V (±0.3V
  • Testers
  • Circuit Tester
  • Performance Tool

Computer Safe Logistic Probe - PTW2991

Retail: $37.31
Our Price: $18.46
In Stock
  • Testers
  • Circuit Tester
  • Performance Tool

Cordless Circuit Tester

Retail: $37.85
Our Price: $19.54
In Stock
  • Testers
  • Circuit Tester
  • Performance Tool

7 Way Trailer Connector Vehicle Tester

Retail: $22.94
Our Price: $21.42
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
  • Testers
  • Tow Function Tester
  • Black
  • Tow Ready

Hopkins Endurance Powered Tail Light Converter w/ 4-Way Flat Trailer Connector and Install Kit

Retail: $114.29
Our Price: $85.84
In Stock
The built-in tester on the 4-way flat in this kit lets you easily troubleshoot. Great for setups with LED or incandescent bulbs, this kit converts your vehicle's lighting system to match your ...
Features: Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights Compatible with 5-pole, 6-pole, and 7-pole adapters (sold separately) Ensures
  • Trailer Connectors
  • Vehicle End Connector
  • Hopkins
  • 4 Flat
  • 6 - 10 Feet Long

Deutsche Hydrapro Trailer Breakaway Kit w/ Charger, LED Tester, and 10 Ah Battery - Top Load

Our Price: $108.99
In Stock
triple-axle trailers Kit includes breakaway switch, 2-amp charger, LED tester, and a battery Battery capacity: 10 amp-hours
  • Kit with Charger
  • Top Load
  • Deutsche Hydrapro
  • 10 Ah
  • 2 Amp Charger
  • Single-axle
  • Triple-axle
  • Tandem-axle
  • LED Tester

Bright Way Trailer Breakaway Kit with Charger, LED Tester, and 5 Ah Battery - Side Load

Our Price: $60.32
In Stock
LED tester lets you easily check the battery's charge. Built-in charger pulls just enough power from your vehicle when your trailer is hooked up to make sure your breakaway battery stays charged ...
Features: Makes sure your trailer safely stops if it ever separates from your vehicle Activates your trailer's electric brakes if the trailer disconnects from the tow vehicle Automatically
  • Kit with Charger
  • Side Load
  • Bright Way
  • 5 Ah
  • 1 Amp Charger
  • Single-axle
  • Tandem-axle
  • LED Tester

Hopkins Engager Trailer Breakaway Kit w/ Charger, LED Tester, Hardware, and 5 Ah Battery - Top Load

Retail: $81.99
Our Price: $69.54
In Stock
The built-in charger in this kit keeps the battery charged and ready to bring your single-axle or tandem axle trailer to a complete stop should it become disconnected from your vehicle. LED tester ...
warranty Note: A breakaway system is required by law in most states for trailers that are equipped with electric brakes and have a GTW of at least 3,000 lbs. Built-In Battery Charger and Tester The
  • Kit with Charger
  • Top Load
  • Hopkins
  • Single-axle
  • Tandem-axle
  • LED Tester

Curt Trailer Breakaway Kit with Trickle Charger, LED Tester, and 5 Ah Lead Acid Battery - Side Load

Retail: $102.95
Our Price: $63.48
In Stock
Lead-acid batteries require no maintenance, which is why we love this kit. The built-in charger keeps the battery charged and ready to bring your single-, tandem-, or triple-axle trailer to a ...
breakaway system is required by law in most states for trailers that are equipped with electric brakes and have a GTW of at least 3,000 lbs. Built-In Battery Charger and Tester The integrated charger keeps
  • Kit with Charger
  • Side Load
  • CURT
  • Single-axle
  • Tandem-axle
  • Triple-axle
  • LED Tester

Brightway Trailer Breakaway Kit w/ Charger, LED Tester, and 10 Ah Battery - Top Load

Our Price: $115.76
In Stock
LED tester lets you easily check the battery's charge. The built-in charger in this kit keeps your battery charged and ready to bring your single-, tandem-, or triple-axle trailer to a stop ...
Features: Makes sure your trailer safely stops if it ever separates from your vehicle When the pin gets pulled from the switch, a signal is shot back to your trailer brakes to activate Automatically
  • Kit with Charger
  • Top Load
  • Bright Way
  • 10 Ah
  • 2 Amp Charger
  • Tandem-axle
  • Single-axle
  • Triple-axle
  • LED Tester

Hopkins Engager Trailer Breakaway Kit w/ Charger, LED Tester, and 5 Ah Battery - Side Load

Retail: $72.39
Our Price: $51.95
In Stock
The built-in charger in this kit keeps your battery charged and ready to bring your single-axle or tandem-axle trailer to a complete stop should it become disconnected from your vehicle. LED tester ...
warranty Note: A breakaway system is required by law in most states for trailers that are equipped with electric brakes and have a GTW of at least 3,000 lbs. Built-In Battery Charger and Tester The
  • Kit with Charger
  • Side Load
  • Hopkins
  • Tandem-axle
  • Single-axle
  • LED Tester

Tekonsha Trailer Breakaway Kit w/ Charger, LED Tester, and 5 Ah Battery - Top Load

Retail: $90.00
Our Price: $69.93
In Stock
Bring your triple-axle trailer to a stop should it become disconnected from your tow vehicle. Breakaway system includes a built-in charger to maintain the battery so you're always ready for an ...
trailers that are equipped with electric brakes and have a GTW of at least 3,000 lbs. Built-In Battery Charger and Tester The integrated charger keeps the included battery charged and ready to go. At any
  • Kit with Charger
  • Top Load
  • Tekonsha
  • Single-axle
  • Triple-axle
  • Tandem-axle
  • LED Tester

Brightway ICU Trailer Breakaway Kit w/ Charger, LED Tester, and 5 Ah Battery - Side Load

Our Price: $65.82
In Stock
Unit flashes the lights on your single- or tandem-axle trailer while also activating its brakes if it disconnects from your vehicle. This way, not only will your trailer stop, but the flashing lights ...
Features: Makes sure your trailer safely stops if it ever separates from your vehicle When the pin gets pulled from the switch, a signal is shot back to your trailer brakes to activate Boosts safety
  • Kit with Charger
  • Bright Way
  • 5 Ah
  • .5 Amp Charger
  • Tandem-axle
  • Single-axle
  • LED Tester