Hello, I am new to the mercedes world, so I will offer up this question. My turn signals quit working in the middle of a drive. I checked fuses ok, I checked bulbs and light test ok, one bulb burnt out front right, replaced it still no front parking light, turn signals or right side parking light. I was told that most of the electric stuff runs on a circuit so once one goes bad they are all soon too. Anyone that can point me in any direction would be great, otherwise I will tinker with it till I feel the hair on my head is worth more than what I will pay a mechanic. Thanks!