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trailer tail lights

1K views 9 replies 8 participants last post by  4mula1fan 
Definitely check all the contacts in your connection as well as check bulbs, when in doubt use new bulbs.
Check fuses. If you have time, and none of these bear fruit, a trailer dealership should have a tester on hand that can check your trailer without being connected.
Oh.. and it's stupid, and it may just be me, but my truck has to be completely off before I connect the trailer.
 
On my 09, there is a separate fuse block for the towing package. Perhaps a relay is out? Though it wouldn't make sense that only one set isn't working. Mind you, I'm a fan of replacing fuses en masse. When you go into your block, there will be a little "map" under each cover.
Additionally, I believe there's a sticky with them around the forum somewhere. If you tested the actual connector on the truck, then I'd go back to fuses and relays.
 
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