I made a tool and it was super easy. I took a 2" ABS coupling, heated it till soft with a heat gun then pressed it onto the retaining nut which I first laid flat on my steel table. Then I took some right angled needle nose and gently put the 3 dimples in. This alone works on the un-installed headlight, but once the headlight is installed there isn't room to get your hand around the coupling due to the recess in the headlight area, so I added a short piece of 2" ABS and cross drilled it for a Phillips screwdriver. Then just press it on and stick a screwdriver in the holes and pop it off. To install, get the retainer started first, then press the tool on and turn till you feel/hear the click. You still have to move one of the horns out of the way on the driver's side but the tool makes the lamp swap a 2 minute job and no blood.