I just purchased a 2011 T&C and just finished adding a class 3 hitch. Trying to decid on the wiring. I only need a 4-wire plug. I see that several manufacturers sell a wiring kit like this one...
Curt 51646 Custom Trailer Hitch Products, Custom Receiver Hitch, Heavy Duty Towing, Curt Manufacturing This wiring kit requires a seperate 12ga wire be run from the converter all the way to the battery.

I was wondering, is it possible to just splice in a 4-wire cord into the turn signal wiring??

I need the wiring for that rare occasion when I use my trailer to haul a small load from the building supply store for a project.

Thank in advance.

Jesse