Hello! I have a 1984 cadillac deville that was back ended back in July. Since then my blinkers have been acting off, as in blinking too slow or half as long as they used to but they were working (I would say 60% out of the 100% they used to) I had to take my car to get the engine cleaned (only the bottom not the top because of all the electrical stuff) and now 2 days later my lights are basically 95% dead. Every 10 seconds it MAYBE flashes for like half a second but there is no sound at all. I also want to add that the front lights still flash when signaling, and brake lights work fine! Does anyone know what the problem might be? Does this sound like it happened because of the engine cleaning or did the lights just finally decide to die?