another trailer wiring question

[Huntaholic]

We have an 03 2500 HD 4x4. it came factory with the trailering package. my question is: if I put one of the 7way to 4way adaptors in the factory receptacle, will my trailer lights work properly? I know the simple way to find out would be to just plug up to a known working trailer light system, but I dont have one yet!

[badhammer]

yes it will the only thing that won't work is the electric brake curcit as you need to install a brake controler and fuse but the tail lights and turn signals will work fine

[Huntaholic]

Thanks!

[jth7186]

ok, so now I have my own question:

 

I haven't had my 03' long, and haven't yet bothered to check the box and see if a controller adapter was included... I do have the towing package. Does anyone know if GM shipped the trucks with the adapter plug already in place, or do I have to pay extra for it?

 

I am under the impression that all we have to do is buy the external controller itself. Am I misguided???

 

Thanks...

[Muddy Mike]

not sure if an adapter comes with the towing package or not. i got my 01 truck used with a towing package. i just went to wal-mart and paid $10 for an adapter plug. works great!

[Huntaholic]

Mine didnt come with ANYTHING and it has the factory towing

package and 5th wheel, camper wiring provision. I found my 7 to 4

way adaptor lying in the road at a speed bump.

With it having the "5th wheel wiring provision, I EXPECTED it to have a

plug already mounted in the bed for the hook up, but NO al it has is the pigtail

provision taped off to the frame rail underneath the truck.