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 Expert
Posts: 1432
  
Location: Never in one place long | We have a 2014 F150 and a 2008 SUndowner... the auxiliary lights aren't working, we've tried checking everything we know how... all the other lights work just fine and when we hook the trailer up to another truck they work just fine... we bought the truck brand new and the lights have never worked since we bought it. Any experts out there have advice? I'm thinking we need to take it to the dealer since it's warranteed? |
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Elite Veteran
Posts: 610
Location: Texas | Sounds like the truck is not wired the same as the trailer... |
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Expert
Posts: 1432
Location: Never in one place long | cbh - 2016-05-19 6:14 PM
Sounds like the truck is not wired the same as the trailer...Â
yeah, it's really strange... I guess I should just bring it in and let them deal with it! |
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 Lived to tell about it and will never do it again
Posts: 5408
| Have you looked for a blown fuse? If that isn't it I would start by testing the plug on the truck with a tester. You can hook up a wire to a battery charger to see which spot on the trailer plug is the aux. lights then you will know which one on the truck to work on. |
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 A Somebody to Everybody
Posts: 41354
Location: Under The Big Sky Of Texas | Make sure you dont forget your trailer when you take your truck in to get it checked. To me your truck is not wired the same as your other truck. Good luck, sometimes the simple things can drive us crazy  |
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 Expert
Posts: 4121
Location: SE Louisiana | euchee - 2016-05-19 7:12 PM
Have you looked for a blown fuse?  If that isn't it I would start by testing the plug on the truck with a tester. You can hook up a wire to a battery charger to see which spot on the trailer plug is the aux. lights then you will know which one on the truck to work on.Â
THIS! Battery charger or a jump box... Connect the clamps to thin wires and chart checking. |
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A Somebody to Everybody
Posts: 41354
Location: Under The Big Sky Of Texas | And another thing check the ground. |
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Expert
Posts: 4121
Location: SE Louisiana | Southtxponygirl - 2016-05-19 7:37 PM
And another thing check the ground. Â
If the other lights work, the ground is adequate. |
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A Somebody to Everybody
Posts: 41354
Location: Under The Big Sky Of Texas | komet. - 2016-05-19 7:57 PM Southtxponygirl - 2016-05-19 7:37 PM And another thing check the ground. If the other lights work, the ground is adequate.
Just a thought.  |
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Expert
Posts: 1432
Location: Never in one place long | euchee - 2016-05-19 7:12 PM
Have you looked for a blown fuse?  If that isn't it I would start by testing the plug on the truck with a tester. You can hook up a wire to a battery charger to see which spot on the trailer plug is the aux. lights then you will know which one on the truck to work on.Â
yep, we've done both of those things and nothing! :( |
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 Born not Made
Posts: 2931
Location: North Dakota | DLV - 2016-05-20 8:22 AM euchee - 2016-05-19 7:12 PM Have you looked for a blown fuse? If that isn't it I would start by testing the plug on the truck with a tester. You can hook up a wire to a battery charger to see which spot on the trailer plug is the aux. lights then you will know which one on the truck to work on. yep, we've done both of those things and nothing! : (
Then if you haven't taken it into a shop, that would be the next step! If it's never worked from day one, you may need to "add wiring" to your truck. I've heard of some trucks needing to add a wire, or fuse, or battery specifically for those auxillary lights. I'm not a mechanic or electrician so I can't give you any technical terms, but I do not that some trucks need some things added to make all the trailer lights work! |
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The Advice Guru
Posts: 6419
| One thing you can do is use a tester and compare trucks and see where the short is in the truck that the lights don't work on |
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Location: Not Where I Want to Be | Have you checked the electrical fluid? |
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Expert
Posts: 4121
Location: SE Louisiana | DLV - 2016-05-20 8:22 AM
euchee - 2016-05-19 7:12 PM
Have you looked for a blown fuse?  If that isn't it I would start by testing the plug on the truck with a tester. You can hook up a wire to a battery charger to see which spot on the trailer plug is the aux. lights then you will know which one on the truck to work on.Â
yep, we've done both of those things and nothing! : (
WAIT!!! You checked all the sockets with a battery charger and they didn't come on, but when you hook to another truck they do? You didn't check right. The ground clamp has to be connected to the ground wire on the trailer or the trailer itself before you poke the hot lead into each socket. |
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