I've got a 1070 (white, factory cab) with a strange problem with the flashers. Specifically, the turn signals don't function right. When you move the switch to either left or right signal, absolutely nothing happens. But if you have the lights on as well as the turn signals, the turn signals work properly. The flashers work fine themselves when you have the light switch in the third position. Any ideas of what to look for? I tried swapping out the flasher/turn signal switch out of my 2390 and the exact same thing happens. I put the switch back in the 2390 and the flashers and turn signals all work fine. Any suggestions? Thanks.