I have a 2003 SeaDoo GTX 4tec. The red warning light comes on and off now and then and I get a loud beep now and then while riding. The Odemeter goes to Zero and the Digital gas indicator goes blank, then goes back on again and off again. Would this be the Harness or the Odometer Display? Any way to check which is the problem? I already replaced the Mpem with an OEM one and double checked the serial number to make sure it is of my ski. I checked the codes [pressed "set button" five times] nothing..