Brake Light and Rear Lights Shorting Out

[ddchef]

I have a common problem, the rear brake light arched and I did the DIY found here, removed the right taillight, cleaned it, solder on the arc spot, sanded and reinstalled. Worked great fixed the braklight and message gone.

Literally one minute later I get the brake light message again. I check now its the left side with same issue. I proceed with the same fix. Turn on it worked!

Not so fast now check rear light message. Now the upper bulb in left taillight is blown, i remove from housing and have a very hard time getting the bulb out of the socket. once removed I notice the two contact hand strange marks and looks like they arched to the bottom of the socket.

Anyone know why my rear light/brake light problem keeps jumping around as one issue if fixed?