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Rear turn singal

Right rear turn singal is showing dim when i activate it

The turn signal indicator is dim or the bulb?

You could have a poor ground in the bulb socket or just a bad bulb.

Or a bad socket.

Time to remove the turn signal lense, pull out the bulb and check for rust/crud in the socket. It that is still nice and shiny, check the ground lead from the socket to the frame and see if it is rusty. Also, look at the filament in the bulb, as sometimes when one burns out, it will re-fuse but burn dim. Look at the little lead contact on the back of the bulb and see if it is dirty dull looking or gouged.

Swap left and right bulbs, see if this makes a difference. You will know whether the problem is due to the bulb or to socket/ground.