67 barracuda rear lights stay on

Guys trying to figure out why the rear lights stay on and thick red wire that goes into the bulk head gets hot to the touch. I believe its the red wire coming from the starter relay. This is a car i bought recently and hasn't ran in 13' yrs. slant 6. I have been chasing down all these little issues to hopefully get it to start. Does turn over. No start as of yet. Thanks guys