True Mods 4-Way Flat Trailer Wiring Tester [Nickel-Plated Copper Terminals] [Male & Female] [Continuity Test] 4-Pin Trailer Light Wire Circuit Tester

Price: $7.50 - $6.99
(as of Dec 26, 2025 10:48:00 UTC – Details)

From the brand

TRUE MODS

“Transform Innovative Ideas Into Reality”

Product Dimensions ‏ : ‎ 6.5 x 3.74 x 0.7 inches; 1.13 ounces
Item model number ‏ : ‎ 8542039913
Date First Available ‏ : ‎ November 10, 2018
Manufacturer ‏ : ‎ ONLINE LED STORE
ASIN ‏ : ‎ B07G8Q5LMS
Best Sellers Rank: #34,018 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #61 in Circuit Testers
Customer Reviews: 4.6 4.6 out of 5 stars (2,482) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

STRAIGHTFORWARD TRAILER LIGHT TESTING – Simply plug the tester inline between the tow vehicle and trailer, turn on the lights and check the easy to read LEDs.
ISOLATE PROBLEMS QUICKLY- By effectively splitting the trailer wiring harness in half, problems can be quickly traced to the tow vehicle side or the trailer side wiring.
NO TOOLS NEEDED – Plug-n-play design means you don’t need anything else to effectively test your trailer light harness.
LONG LASTING CONSTRUCTION – Designed to be weather, corrosion, and impact resistant for years of reliable service.
CONVENIENT COMPACT DESIGN -The two-sided design means you can leave it plugged in or store it conveniently in your glove box, door pocket, or tool box.