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

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

Q: Does the testerwork wothout the trailer being attached?

Yes. You can utilize the tester to test the tow vehicle side of connection without the trailer attached to it. Hope this helps.

Q: Does it work on bulbs that aren't LED

Yes - This is testing your wiring, not your bulbs. The only reason the description mentions LEDs is because the indicator lights on the tester are long lasting LED.

Q: tried this today, when I turn on the left or right directional all the lights light up on the tester? is it supposed to be all lights?

Only one LED will light showing left or right or tail lights. Sounds like you have a wiring problem in the vehicle's wiring to the connector. I would check the ground connection for good continuity to the auto frame. An 'open' ground would allow all lights to light as you describe. You could verify that the tester is ok by trying it on another vehicle, too.

Q: Why are all three lights on when connecting the trailer and car? Lights arent working on the trailer and the tester works when only connected to the c

it shows there is electric to that poin not thoughtto th blubs on thr trailer

4.6/5

Product ID: 77742154

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💡Easy-to-read LEDs

🔌Plug-n-play design

🛠️No tools needed

Frequently Bought Together

Description

🔍 Light Up Your Troubleshooting Game!

DURABLE RELIABLE - Weather, corrosion, and impact resistant for long-lasting use.
EFFORTLESS TESTING - Simply plug in and check your lights with ease.
COMPACT CONVENIENT - Store it anywhere—glove box, door pocket, or toolbox.
USER FRIENDLY DESIGN - No tools required, making it perfect for on-the-go troubleshooting.
QUICK PROBLEM ISOLATION - Identify issues in seconds by splitting the wiring harness.

The True Mods 4-Way Flat Trailer Wiring Tester is a user-friendly tool designed for straightforward trailer light testing. With its plug-n-play functionality, durable construction, and compact design, it allows for quick problem isolation and reliable performance, making it an essential accessory for any towing enthusiast.

Have a Question? See What Others Asked

Does the testerwork wothout the trailer being attached?

Does it work on bulbs that aren't LED

tried this today, when I turn on the left or right directional all the lights light up on the tester? is it supposed to be all lights?

Why are all three lights on when connecting the trailer and car? Lights arent working on the trailer and the tester works when only connected to the c

Common Questions

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Great price for an authentic product. Fast international shipping too!

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Perfect platform for hard-to-find items. Delivery was prompt.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

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Good experience, but the tracking updates could be better.

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