Light question

[EARL KITCHENS]

My Laramie came with a 7 connector round plug for towing. My boat trailer has a 5 pin flat plug. I bought an adapter to go from a seven pin to a five pin. My boat trailer running lights work but the signals and brake lights do not. Any suggestions? Thanks.

 

[Brady]

Did you try going directly to the 5 pin that is the top part of the trucks receptacle? Or does yours only have the 7pin?

 

[ZMan079]

Earl,

This link should explain the wiring config

http://www.drawtite.com/20136.html

These 2 links are probably what you need...

http://www.drawtite.com/dt78118.html

http://www.drawtite.com/118703.html

HTH,
ZMan079

 

[EARL KITCHENS]

Thanks, my top plug is only a four pin.

 

[EARL KITCHENS]

ZMAN079, I have an adapter just like the one you showed. I have actually purchased two different ones and got the same results. i think the factory wiring to the round 7 pin is hooked up wrong.

 

[ZMan079]

That or the boat is......

 

[Brady]

Test light is in order.

 

[WesMgc]

My money on the boat not wired properly

 

[EARL KITCHENS]

i will take that bet. The lights work fine hooked up to my old GMC Sierra. They also work with two other vehicles. I think the truck wiring from the factory is the issue. i will know by next week. Thanks

 

[WesMgc]

i will take that bet. The lights work fine hooked up to my old GMC Sierra. They also work with two other vehicles. I think the truck wiring from the factory is the issue. i will know by next week. Thanks

There is a 7 pin tester that you just plug in and lights up if all is good.
Hope you get it fixed.