I have a 1969 Lemans and at the beginning of the summer I started having turn signal problems. Now they don't work at all the switch doesn't even light up the signal when it is activated. The hazards work and the back up lights work so I know its not the fuse. I did purchase a signal switch and put it in without installing it on the column. I was told to do this to see if it would work the turn signals, it did not. Any ideas? Does the turn signal switch have a ground and must be installed on the column to work? Please help!