How to Fix the 'GPS Module Not Responding' Error on Lowrance LCX-26c HD?

It sounds like you're experiencing issues with your LCX-26c HD and the GPS module not responding. Often, this problem isn't due to a faulty antenna, although that is a possibility. More frequently, it stems from poor connections to the power source. I recommend checking a few things to troubleshoot the issue. First, inspect the fuses and their holders. Sometimes, bad fuses or faulty connections can lead to the GPS module not receiving power. Use a multimeter to test the fuses and ensure that all connections are secure and in good condition. Make sure the power wire going to the antenna is properly connected as well. Regarding the antenna, the Evermore SA-320 NMEA 0183 Smart GPS Antenna, with part number `SA-320-RS232`, is compatible with your Lowrance device. If you're looking to purchase it, I suggest checking various online retailers or marine supply stores, as it may not be available directly through Lowrance. If you've already reconnected your original antenna and checked all connections and fuses without success, it might be worth considering that the antenna you purchased initially didn't match your device properly. I hope these steps help you resolve the issue. If you have any further questions or need more assistance, feel free to reach out.