1989 Civic 4 door sedan Dx

Well when i brake i can see on my dash the right turn signal turns on, Its really Dim. But when i click on right signal its bright.
Also my damn reverse light also turns on both side.
My reverse lights arent even connected.

When driving i turn on the right signal and brake the whole right side of my taillights flicker like its a signal light.
Its quite irritating.

Anyone had this prob before?
thanks in advance

 

This is usually caused by installation of the wrong bulb type. You may have a single filament bulb installed into a double filament socket.

 

Cant be, havent touch the bulbs at all.
ONly happen recently
when i brake right turn signals and reverse lights turns on.

 

Check the bulb sockets and rear ground wire.