The '71 indicator lights which are installed with the nut from below,
not the screw from above. My '71 Demon 340 has the L31 option.
The front hole for the stud is 1 5/8" back from the front of the
fender(not including the extension) and 1 1/4" out from the edge of the fender, toward the hood. The hole for the socket/wire is 2 3/8" from
the front of the fender and 1 1/4" out from the hood. The front hole is
1/4" the rear is 3/8".