1973 vw super beetle, the left and right signals and 4 way lights have stopped working. Installed new flasher, actually 2 of them, replaced turn signal assembly on steering column, replaced hazard switch, verified power and ground at switch and at fuse panel, tested all fuses. Still does not work. I have been unable to purchase a new hazard switch, for some reason no one makes a replacement for the 73 super beetle. i was told these switches were a common problem. I purchased 2 used ones but they do the same thing. Does anyone have a schematic of the switch and some sort of test to prove if the switch is bad?