back light

Good night for the forum, if someone can help me, the backlight does not turn on I would like to know if someone has the manual on this subject, I already changed the valve that goes in the box and does not be aglo check fuses, connections, bulbs and nothing please if someone can make me a hand I would appreciate it. Thank you very much and greetings from Venezuela.

Good night for the forum, if someone can help me, the backlight does not turn on I would like to know if someone has the manual on this subject, I already changed the valve that goes in the box and does not be aglo check fuses, connections, bulbs and nothing please if someone can make me a hand I would appreciate it. Thank you very much and greetings from Venezuela.
Excuse me that I had not placed the specifications of the vehicle, it is a Fiat Siena 1.8 HLX, year 2005 and has 90,000 km thanks to who can find out about this.

Hello, look you would have to prompt whether in the Vulbo de Marca back tab you have volt or current if so with a peeled cable at the tips you try to make a bridge by joining them you have to turn on the light but you have to revise the headlights or the rear installation.