i have a 2005 Tacoma 4 door long bed 4x4......several years ago towing my pop up camper on a 3000 mile trip . The towing lights stopped working ( long trip with no tail lights on camper). Check all fuses etc. Could never trace the problem down. So i bought the etailer kit tied into the taillight s--it came with a flat plug so i could pull my utility trailer. My buddy with a garage tried to find out what was wrong with lights and could never find out what happened to them . So now i sold the pop up bought a Rpod camper getting ready for long road trip would like to get my 7 plug trailer lights back working....as the Rpod has the 7 plug end as well. ANY SUGGESTION on how to trace down the PROBLEM???why i have NO power on the original towing plug--THANKS FOR YOUR HELP!!!