Shorelandr trailer light issues

Hi guys, hope someone can shed some light on this for me. I have a 2015 Shorelandr with a back tail light that won’t display a brake light or turn signal. The running lights work fine. I’m assuming these are LED lights, as I see no place for bulbs. I’m wondering if I found the problem….my tongue is a break-away, and I noticed that the blue wire was crimped fairly badly from having the tongue broke away. Could this wire be the issue? I hope the pics are clear enough. Thanks for any help with this….

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If it was my trailer I would repair that smashed wire before I did any more figuring. Also if its a newer truck it probably has dedicated fuses for the trailer lights and would check that also.

Check the ground wire, make sure that it is getting a good contact at the light. Most issues always are associated with the ground wire. Also check and make sure that no other wires are smashed or pulled out of the plug.

if wired correctly,the blue wire is for the brakes.yellow is left hand turn and stop.green is right hand turn and stop,brown is running lites,white is ground. as stated,repair the blue one and look for fuses to individual lights.
many parts stores sell a plug in diagnostic connector that will tell you if you are losing it at the truck,the led’s will light up when there is power to what ever circuit you are testing so that you can eliminate the truck,around 15.00 bucks,and super easy to use,just plug in your vehicles connector and start turning on each function.if the truck lites up all of the led’s on the tool,your problem lays in the trailer. if you have a spare battery,hook up a lead from negative to the trailers ground,then using another lead,probe each wire and see if they lite up then,if not able to lite a particular lite,you have either a broken wire,or a bad lite,if your trailer has brakes,(the blue wire)you should be able to hear the brakes apply and they will have an electrical hum to them,(just the magnets doing this)hope this helps.

I appreciate all of the responses guys….thanks. I feel like a tool however….I checked the fuse and it was just that simple. But….I think I may caught a future problem with the wires getting crimped.

brian_peterson wrote:

I appreciate all of the responses guys….thanks. I feel like a tool however….I checked the fuse and it was just that simple. But….I think I may caught a future problem with the wires getting crimped.

Yes, you need to protect those wires from getting pinched. Use wire loom or plastic wire protector.

But first that blue wire needs attention! As Iowaboy said, that’s normally the brake wire. Does your trailer have electronic brakes?

What you do about that wire depends on if your trailer actually has brakes or not. I’ve seen it where the blue was included in the wiring harness even though the actual trailer didn’t come with brakes, but if you have brakes, that wire needs to be inspected and repaired if necessary.

This isn’t something I’d leave to chance. If your rig is big enough that you need brakes, than you want to be sure they are working and stay working.

Grouse

When I had a trailer with a swing-tongue, I ran the section of the wiring harness that was susceptible to pinching through some sheathing like this. Cheap and effective.

brian_peterson wrote:

I appreciate all of the responses guys….thanks. I feel like a tool however….I checked the fuse and it was just that simple. But….I think I may caught a future problem with the wires getting crimped.

I had a similar issue with my Ram 1500. I kept blowing the same fuse, until I finally tracked down the issue to some exposed wire shorting out the fuse when my trailer would hit water.