I bought a ski that turns out to have mix matched electrical components. Its an 05 RXT, but the electrical components exist of: 05 MPEM, 03 wiring harness, 03 ECU, all of the rest is 05. My problem is, when I put the key in I get one long beep and nothing else. No response from the gauges, bottons, anything. I have a new battery in it, and the dealership has tested the DESS post and tried to program a new key but still getting the same results. Does anybody know what needs to be done or changed??