I own a 1999 500S. I had to replace the right front turn signal bulb and socket. Now the turn signals only work when the headlamps are off. They are also blinking too fast. When I turn on the headlamps they do not blink at all, they are bright but do not blink. The rear looks just fine.
Any suggestions on what I am doing wrong?

What were the symptoms of the original light and socket? Why did you need to replace it?

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dtf
1994 E320 Wagon (Died @ 308,669 miles)
1995 E300 Diesel (228,000)
1999 E300 Turbodiesel ( died @ 255,000)
2006 Toyota Tundra SR5 AC 4X4 (115,000 miles) rusted frame - sold to chop shop
2011 Audi A4 Avant (165,000 miles) Seized engine - donated to Salvation Army
BMW 330 xi 6 speed manual (175,034 miles)
2014 E350 4Matic Wagon 128,000 miles
2018 Dodge Ram 21,000 miles

I had to replace it when the turn signal lens broke. The clip holding it in broke.
I was able to fix the issue with the bulb when I gave a 1/2 turn to the bulb then put it back into the socket holder.

1st ?, do you have clear lenses with amber bulbs or are they amber lenses with clear bulbs? I believe the bulb bases have different offsets for the pins which lock them in place.

2nd ?, is the problem isolated to one side or both?