My new to me 2007 PII was a repo and the old owner kept his electronics when the bank took it. I mounted an X-135 up front and it was pre wired for it. I was wondering if there are factory installed transducer(s) and if so, where is the ducer for the front graph located? Also, I have an HDS 5 coming for a dash install and it is also pre wired (blue connecters in the dash). Does anyone know if the power cable and transducer will work for the HDS unit or will I have to install those too?