I installed a new 6 volt wiring harness from Classic Parts and aftermarket turn signals a couple of years ago and have not had any problems although I have not driven it more than about a hundred miles After a short drive recently I thought I would check the signal lights and the rear lights were blinking very slowly but the front was normal.. After checking the fuse and looking around, they completely stopped working. Could it be a faulty flasher or ignition switch? Steve