Troubleshooting Trailer Tail Light Turn Signals Flashing On Both Sides When Pressing Brake Pedal

Question

Question:

I’m rewiring a trailer for a older family member. They bought new led lights for the trailer with new wiring and a junction box everything works except the taillights are 4 wires. Ground, running, brake, and turn. There is also two colors in the led red and yellow for turn. So when turn the signal on it’s working but if I apply the brake the opposite side signal comes on and blinks as well. Is there a fix for this?

asked by: Chris

0

Expert Reply:

The issue you are having is the trailer wiring is going to have combined turn signal/brake light wiring. This is why trailers will typically only have single red lights and 3 wires going into the tail light. A Tail Light Converter # 118158 can be used but as these are designed for incandescent tail lights. You will also need some Resistors # DI34ZR to allow them to work with the LED tail lights.

expert reply by: Bud M

0

Answer 1

Odds are your cargo carrier's lights are the super-efficient LED type. These can cause turn signal hyperflashing as you describe. This does not cause any actual harm to anything but it can certainly be annoying. Your options are to try load…

view full answer...

Answer 2

If the lights on your trailer were acting fine prior to installing the LEDs then you need to start off by checking the ground connections for your lighting. Make sure they are securely connected to a clean, bare-metal surface as even some paint can…

view full answer...

Answer 3

Per Putco, you would need 1 load resistor inline with the wiring harness feeding LED bulb for a turn signal. I believe your Sierra has two bulbs per side, one for the running lamp, one for the brake/turn signal. You only need to install Load…

view full answer...

Answer 4

The first thing I recommend doing is to check that the ground wire for the lights is securely attached to a clean metal surface on the trailer frame. A loose ground wire will keep the lights from working. If the ground attached to the trailer does…

view full answer...

Answer 5

It sounds like either you have the load resistor #DI34ZR connected to the wrong circuit, not connected quite right, or the vehicle uses a pulse width modulation type of wiring that could affect performance. I have included a picture that shows the 2…

view full answer...

Answer 6

When trailer lights are malfunctioning, there are many possible causes. As a first step, you will want to use a circuit tester such as part #PTW2993 and test the trailer connector on your Grand Cherokee. This will help you determine if the problem…

view full answer...

Answer 7

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

view full answer...

Answer 8

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

view full answer...

Answer 9

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

view full answer...

Answer 10

The old version of the #HBA-CAM used 4 wires, but the product was updated awhile back and now uses only two wires as shown in the photo on the product description page. The white wire from the HBA-CAM would tap into the white ground wire and the blue…

view full answer...

Answer 11

There is a Titan hitch extender that should work for you, but would require a Titan hitch be installed on your truck to handle a tongue weight loaded that far from the hitch. It is Reese part #RP45292. You can use it as a 34 inch extension or cut it…

view full answer...

Answer 12

You can use a 7-Way and 4-Way connector at the same time just as long as you are not overloading the light circuits. If your camper has a lot of outside lights like running lights, and brake/stop/turn lights then the lights that perform the same…

view full answer...

Troubleshooting Trailer Tail Light Turn Signals Flashing On Both Sides When Pressing Brake Pedal

Products Referenced in This Question

Product Page this Question was Asked From

Featured Help Information

Instructions

Continue Researching