When we did my Dads TJ we wired in to exisiting electrics but we didn't look to see if there were any connets for a tow plug
You can buy a towing loom from Jeep that simply plugs into the connector situated in the space between the offside rear quarter and the offside rear wheel, i.e. behind the tail light cluster. Access is via the plastic cover at the bottom of the offside rear of the tub.Tony