instalation

Hi everyone I'm new to this forum and I need help please if someone can help me as I'm very confused and know very little about audio and sound. Basically I have a bmw 5 series 520d m sport 2008 lci model. I bought some under seat subwoofers to replace factory ones as they were very poor quality...

If you can find the parts here is a link to show you how to do this. http://kom.aau.dk/~kod/E36_OBC_Installation_instructions.pdf

Hi folks =) I purchased an HID xenon kit on Ebay and installed it in the car. Found out I got error messages and tried to remove the error message with the resistor I bought afterwards. Got just another frequent error messages about low beam failure, left right left right ... So I went crazy...