Puzzled by trailer lights not working

[Russ from MN]

This thread has certainly gotten beat to death, when some simple step by step troubleshooting should have solved it in an hour!

 

[rustred]

This thread has certainly gotten beat to death, when some simple step by step troubleshooting should have solved it in an hour!

that would be a big labor bill also.

 

[drsportster]

Today I will run a ground from trailer to truck and continue further .

 

[Jim.ME]

Today I will run a ground from trailer to truck and continue further .

If you have properly wired it through the plug to the trailer frame/lights when you did the installation of the harness, the ground should be there.

 

[rustred]

Today I will run a ground from trailer to truck and continue further .

We keep asking if you have actually confirmed the trailer lights work by checking the trailer plug wires with a battery. ??

 

[da.bees]

Who's on first, What's on second, I don't know's on third and whereabout's wandering out.

 

[drsportster]

We keep asking if you have actually confirmed the trailer lights work by checking the trailer plug wires with a battery. ??

Yes they did not work on battery charger power but I will try my atv battery I suspect nothing wrong with the lights

 

[Jim.ME]

I gather from your January thread you do not use the 7 to 4 pole adapter with your motorcycle/ATV trailer. If you can still hook the motorcycle/ATV trailer to your truck and the lights work without the adapter, stop messing with the truck end of this for now. A factory-made adapter should bring the right four terminals out for your trailer plug. Use a battery for power, the wiring diagram, and check/fix the trailer lights. Please eliminate the trailer harness and lights, then try it on the truck.

 

[Russ from MN]

Yes they did not work on battery charger power but I will try my atv battery I suspect nothing wrong with the lights

If your battery charger is a smart charger it won't put out any current unless it senses voltage!

 

[drsportster]

Yes The charger is a fail need a battery from my atv

 

[buickanddeere]

Yes they did not work on battery charger power but I will try my atv battery I suspect nothing wrong with the lights

I would not be too quick to trust a battery charge as a source of power . Without a battery connected to it .

 

[mark1955]

there went the diode.

 

[drsportster]

there went the diode.

What does that mean ?

 

[buickanddeere]

What does that mean ?

Diode(s) in the battery charger .

 

[rustred]

Yes The charger is a fail need a battery from my atv

Do you have lights yet ?

 

[Jim.ME]

Yes they did not work on battery charger power but I will try my atv battery I suspect nothing wrong with the lights

Are you working on getting the lights working currently or is this a project that gets a few minutes now and then? I ask as most of us are trying to help you but if it is on the sideline for now, we should wait until you can come back with some answers to outstanding questions and stop bothering you.

 

[drsportster]

Result Bad ground due to not scraping powder coat off grounding point Lights finally fixed

 

[flying belgian]

The adapter has a small red light so the adapter is hot They wires are now new at the tail light you have no power from harness Another weird thing {I no longer assume all led lights are not working All four can't be bad so that is ruled out [ But the lights don't light when a battery charger is put to them I am still confused I even ran an auxiliary ground from trailer to truck.

I don't think a battery charger will light them. You need to have an actual battery.

 

[drsportster]

It is fixed now

 

[rustred]

Result Bad ground due to not scraping powder coat off grounding point Lights finally fixed

how did you find that out ? when hooking the booster cable to the trailer ?