I replaced the X15 with an HDS8. The sonar on the X15 was not working properly. I don't know if it was because of the battery I had on the boat that was reading 11 volts and the unit requires 12 volts to operate. The GPS on the unit works fine. I have the GPS antenna and the gimbel bracket and power cord. I did not take the old transducer out of the hull. The transducer may have been faulty which could be causing the sonar proble. I would sell all for 75.00 plus shipping.



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