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I recently developed a problem with my blinkers. They don't work; there is no flashing, and no indication of flashing on the dash. At the same time, my cruise control, hazard lights, and brake lights stopped working. I replaced a few fuses, now the cruise control, brake lights work. I sprayed wd-40 on the hazard light switch, which started to work. Nothing I did would get the blinkers to work. I replaced the multi-function switch, which also didn't help. Could this be a relay problem or grounding issue?