I thought to use the plug in kit you still need a connector to enable it to work, which isn't available from Fiat unless you buy the complete kit from them. It will enable power to be put onto the output of the module on the bumper, as I believe it is not live if you check. I may be wrong and hopefully I am as this is all that is putting me off fitting a towbar to my MJ, as I can't see the point in scotchbloking in the boot to enable services.