The blinkers did not work, no matter what position the key was in; hazard lights worked so I just installed a NOS OEM Ford multifunction switch. Now, when the key is in the run position, without the engine running, blinkers work fine. I then start the car, and with the key in the same run position, the blinkers and fan do not operate. I then turn the car off, put the key in run and they work again. Got me bamboozled, any suggestions ?