Here is how I use a large g clamp/c clamp to break the bead of a tyre/tire
Use a spare bit of wood on far side of wheel from bead to be broken and set the fixed end of the clamp on it
Place the swivel end of the clamp on the tyre/tire bead as close to the wheel as possible
Tighten the jaws of the clamp and it should push the tyre/tire bead off its seat a wee tweak with a tyre/tire iron may be required a short distance from the clamp jaw just to get the bead to jump off the seat
Choose 1 flat on the socket, use a die grinder to remove enough material straight down the shaft of the socket, you now have a socket to adjust your passing lamps with out disturbing the wiring
This is what the expensive Snap On socket looks like
I had one but I gave but to my brother Jeff, since then I have made a few of them