I have a 105 series Landcruiser and whilst.

Hi, I have a 105 series landcruiser and whilst driving along the freeway.
Both the speedo and rev gauge stopped working and I could smell burning plastic. I immediately pulled over and turned the car off. I checked under the bonnet and it's seems the issue was under the the dash. Since then. Both the speedo and rev gauge have stopped working. I would really appreciate your advice. Thanks tony