Help! No trailer lights work

613089

{"text":"i own a 2012 cascadia. Been having problems with trailer lights working... I hooked up to a trailer couple days ago and nothing worked. Then on my way to shop\nLights would flicker on and off and trip abs light in cab. Get to shop and they thought I needed a new plug on tractor... Next morning a new tech plugs pigtails in and lights work... Week goes by and abs light is on.. Thinking ok gotta go to shop for service. Shut down at night and wake up before sun up and trailer lights aren't working again... Took to shop at TA and said fuses relays are good but they aren't get ground from computer... I have no clue\nWhat to do and now have to wait until Monday to get to Freightliner... Anyone have any ideas?","pics":"[]","canComment":true}

95010

{"replyTo":"","text":"There's a fuse box under the hood for trailer fuses. It's on the driver side firewall. The long one. The cover has the answers to which fuse is which. I had a problem with my brake lights not working on my trailer. I changed the fuse. All the lights work just didn't have trailer brake lights.","replyToPid":0}

95010

{"replyTo":"","text":"If that didn't help it might be a bad green electric line or maybe it need to be pushed all the way in on the tractor side.","replyToPid":0}

505487

{"replyTo":"","text":"I had the same problem a few times with different Trailers it could be bad fuses  or a frayed power wire touching the metal on the trailer causing a electrical short, Had to have the shop find the short and fix it. Hope it helps","replyToPid":0}