Rear light cluster not working

[grahamchet]

Audi A4 B7 Avant 2l diesel automatic

Just went to garden centre to collect Christmas tree. Right hand indicator started going double speed so checked and rear indicator not working. Also discovered rear light not working went to garage to get some bulbs. Easy to change but when I tested NOTHING was working. Left side everything OK. Right side nothing - rear, brake and indicator light all dead. HELP

[grahamchet]

Just discovered my problem. Disconnected the plug that brings the wires into the 3 bulb holder. Worked out that the slightly thicker wire was the common earth and the 3 others were power supply for the three lights. The male earth pin in the plastic bulb holder was complete corroded. Quick fix to push a piece of copper wiring cable into female plug with just 2/3mm protruding. Pushed back into plastic holder in the hope that the copper would make a connection with what's left of the corroded pin. Works OK - at least until I can buy a new holder tomorrow.