Inside the upper glove box. It's a shelf. Tadaaaaa! The LHD means you drive a "left hand drive" vehicle. If you were in UK, it would be RHD. See the things we know (or think we do)?DaleK said:I found a black plastic cover plate under the seat of my '05 Prius. It is about 8 1/2" by 3", and has the number 55414-47020 on the back, also the letters "LHD". Does anyone know where it belongs?