LED Lighting problem

Grueller

I have 24/7 brand led lights on an Ifor cattle trailer here. On one side I have no tail lights.
These tail lights are the same Leds as the brake lights. For brake lights they just glow brighter.

Now on the passenger side the tail lights are not working. The brake lights are. I presume the light unit is not worn out given that the Leds still light for the brakes. Am I right in thinking this?

So far all I have checked is the cable from the jeep to the trailer and it is perfect on the dropside trailer so not that. I have checked the connections at the lights and they are fine.

Next port of call is the socket at the front of the trailer. If that is not the problem I presume I need to get in under and trace all wires for damage?

enricoh

Have u tried plugging in another trailer to rule out the socket on your motor?
Half the time that's the problem.

blue5000

Handy fault finder here

http://www.ebay.com/itm/Trailer-Wiring-Tester-Checker-7-way-Plug-Socket-LED-Indicator-Light-/302082521325

Grueller

enricoh wrote: »

Have u tried plugging in another trailer to rule out the socket on your motor?
Half the time that's the problem.

Tried that. Not the jeep. Thanks.

Muckit

Did you wire the trailer yourself? How are the wires from the units connected to the main cable going to the plug.... box junction, solder and heat shrink or wound together and insulating tape? The last option is not great and will eventually let a person down.

Although possibly not the problem in your case, I have been behind trailers and even lorries and seen some of the leds have failed in light unit itself. The rear lights on Toyota corrollas from about 10 years ago had same problem, you'd see some of the taillights from led ring would be blown.

Muckit

I'd look at plug on trailer next. Sometimes the wire can corrode where it joins into terminals. You could pair back the wires until you get bright fresh stuff. Put a bit of solder on the tip. Solder is great as it wouldn't stick if wire is gone black and corroded. It will also keep the strands together and give a better connection when screw clamps down on it. I've started crimping pin connectors to ends. Works well also.

tomwaterford

Checj your plug iirc brown and black are you tail lights

(numbers 5 and 7)

patsy_mccabe

Grueller wrote: »

I have 24/7 brand led lights on an Ifor cattle trailer here. On one side I have no tail lights.
These tail lights are the same Leds as the brake lights. For brake lights they just glow brighter.

Now on the passenger side the tail lights are not working. The brake lights are. ...

Not sure about the LED trailer lights, but on the old style the brake lights and taillights are the same bulb but different filaments in the bulb. So if you like 2 bulbs in one. Can you get your hands on an electric meter. Then take the cover of the trailer lead plug and then plug it in.
The earth is the white wire (no 3) so keep the black lead of the meter on this. Go around then and check all the others according to the diagram below. You'll need a second person to push the brake.

zetor 4911

Does anyone know are reverse lights required by law on a trailer behind a jeep.

Grueller

zetor 4911 wrote: »

Does anyone know are reverse lights required by law on a trailer behind a jeep.

I passed be test without them anyhow. Tester never looked for them.

jigjiganonchuk

Actually, reverse LED lights are not required by law, but it does not means you can't pass test.

zetor 4911

Thanks for the replies.
In relation to the 7 pin socket on the jeep and the one that goes into this from the trailer are there better quality one available than the black plastic one because they would drive you mad.

_Brian

zetor 4911 wrote: »

Thanks for the replies.
In relation to the 7 pin socket on the jeep and the one that goes into this from the trailer are there better quality one available than the black plastic one because they would drive you mad.

YEP.

Muckit

zetor 4911 wrote: »

Thanks for the replies.
In relation to the 7 pin socket on the jeep and the one that goes into this from the trailer are there better quality one available than the black plastic one because they would drive you mad.

I find it's the bit of copper wire that is shoved into the connections that is affected by dampness that is the real issue.

Once the copper goes black it won't conduct the current. A blob of solder is a good idea to fuse the strands together before shoving them into terminal. Solder won't stick to bad copper so if it sticks you know you 'I have a good conduction of current. It also stops the terminal screw from crushing the fine strands. Alternatively if you had the right crimpers, you can crimp on pins. Both these methods I have found to work well and keep lights working.

_Brian

Muckit wrote: »

I find it's the bit of copper wire that is shoved into the connections that is affected by dampness that is the real issue.

Once the copper goes black it won't conduct the current. A blob of solder is a good idea to fuse the strands together before shoving them into terminal. Solder won't stick to bad copper so if it sticks you know you 'I have a good conduction of current. It also stops the terminal screw from crushing the fine strands. Alternatively if you had the right crimpers, you can crimp on pins. Both these methods I have found to work well and keep lights working.

Spot on... spray of WD40 into socket and plug is a good job to help keep damp out of them..

9935452

Grueller wrote: »

I have 24/7 brand led lights on an Ifor cattle trailer here. On one side I have no tail lights.
These tail lights are the same Leds as the brake lights. For brake lights they just glow brighter.

Now on the passenger side the tail lights are not working. The brake lights are. I presume the light unit is not worn out given that the Leds still light for the brakes. Am I right in thinking this?

So far all I have checked is the cable from the jeep to the trailer and it is perfect on the dropside trailer so not that. I have checked the connections at the lights and they are fine.

Next port of call is the socket at the front of the trailer. If that is not the problem I presume I need to get in under and trace all wires for damage?

Most of the time i find the problem with trailer lights not working is bad connections.
What fixes most for me is replace the trailer plug ,
A quick fix is to get a flat screwdriver and widen the pins on the lpug on the trailer/jeep. it makes them make a better contact with each other.

jigjiganonchuk

The most common problem of bad connection is corrosion.

DanWall

jigjiganonchuk wrote: »

The most common problem of bad connection is corrosion.

Try linking pin 5 & 7