Light marches back

Hello good I have a problem with a Mercedes A140 The Pekeñito stays the light on my gait on and and I changed the acorn back and follow and ywal and the e tested outside the gearbox and ba ven the problem is the change selector to someone to give the problem andq solution has

Try the wiring.
It may have a dough cut.
Greetings

First it is sure to be the same and signal cut for the same place because on the occasion there are inverted bulbs, the second if it does not usually cut you there is a kind of ball or lever that is responsible for precious the tip of the bulb from inside the box, if this is the case you have to disassemble the box or put a button that is responsible for this.

See if you have to regulate or graduate.