heres how i clean my truck: first i use an aircompressor to blow off any dirt or water. then if theres any dirt/oil left i use rubbing alcohol and a rag and sometimes electrical contact cleaner. for dirt in tight spots that doesnt come off with the air compressor i use a tooth brush. i never use water on my truck because i dont want to risk anything rusting or getting water in the electronics. also nitro cleaner might be one of the next things i purchase. and once again this topic has been mentioned before.