I recently installed the eclipse avn6600 and I can't seem to get the speed sense wire right. I am tapped into the purple wire/white stripes which is located in the speedometer harness. I made sure the little wire splicer i'm using was working ok.. I constantly get the message on the screen saying "Check Speed Pulse"... what could be my problem? the purple/white wire is correct, right? That's what i've concluded after searching this site and scionlife.com.. they say purple/white is the way to go.