Someone know whats up with my speedo? At cruising speeds and during deceleration, and maybe even while accelerating it bounces around like the fuel gauge in a damn boat. Then when it really wants to show off it also makes a sort of buzzing / whining sound to accompany its stupid little dance. I'm not sure of the originality of the cable but it has a little sort of top-hat shaped adapter pin for the dash end. What do you guys think?