Turn Signal Shows Hot all the Time with Plug-In Trailer Connector Tester

Question

Question:

I have not had any problem until last week with lights but now i think i may have a short in system . When i check harness the tester shows that the left light is hot all the time. I have the curt wire harness with separate wire to battery.

asked by: Richard

0

Expert Reply:

If a 4-way trailer connector tester like part # I26 shows that the drivers side turn signal on the Curt T-Connector Vehicle Wiring Harness part # C56344 for your 2014 Jeep Compass is constantly hot then you would first want to remove the driver's side tail light assembly. Once this is done you would then need to remove the connector to the harness and inspect the pins making sure none of them are bent and or corroded. If they are then you will need to clean them up with some electrical contact cleaner or straighten them back out. If the pins look okay then trace the wires back to the converter box. If no shorts are found then the box is most likely defective and the unit would need to be replaced.

For a replacement trailer wiring harness on your Compass, I recommend the T-One Vehicle Wiring Harness part # 118539 which is the most reliable trailer wiring harness we offer for your vehicle. It installs the same way as the Curt harness and you can even use the power wire to the battery you already have ran.

expert reply by: Conner L

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Answer 1

When a trailer's tail light remains on when the vehicle is shut off, this usually indicates some kind of short in the wiring. I first recommend using a circuit tester like #PTW2993 to check the vehicle side connector. You will want to see if…

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Answer 2

Generally you see this situation on a vehicle that has LED lights because there is a power bleed coming from a different circuit into the lighting circuit. LED lights require a lot less power than incandescents, that's one of the biggest benefits…

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Answer 3

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 4

Basically what it boils down to is that if you have the tow package you'll already have a 4-Way trailer wiring connector on your 2019 Toyota Highlander so if you don't already have one odds are you need a wiring kit with the converter like…

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Answer 5

If the lights on a 4-Way trailer connector tester such as #I26 light up when connected that means that those circuits are receiving power. It doesn't take much power to light up these small LED lights so even residual current could set them off.…

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Answer 6

When replacing a trailer wiring connector that carries a 12 volt accessory circuit like a 7-way like the part #PK12703 it would be wise to disconnect the battery as that circuit is hot all the time and it could cause a short. But if you were…

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Answer 7

The issue you are describing does indeed sound like a failed converter box. It is not uncommon for converter boxes to fail over time especially if they are not properly secured. You will need to replace the entire unit in order to get your trailer…

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Answer 8

Your pictures did not make it through so please email them to me by responding to this message. In the meantime the easiest way to determine if a vehicle has the factory tow package is to have the dealer run the VIN in their system and they should be…

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Answer 9

If the LED light is staying on that indicates that power is being drawn through the system. This indicates a short on the trailer wiring. To track down the short there are a couple of things you can do. First, make sure the trailer side connector is…

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Answer 10

It sounds like you may still have a mis-wired trailer connector or that there could be a corrosion problem in the vehicle's trailer socket or on the trailer's plug. If your trailer's running lights are coming on as soon as you plug in the…

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 12

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Turn Signal Shows Hot all the Time with Plug-In Trailer Connector Tester

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