Convertible13 Posted January 30, 2017 Report Share Posted January 30, 2017 How can I tell if my fuse panel is bad? My trim tabs, live well pumps and nav lights don't work. Fuses arent blown. My gps/fishfinder and bilge pump work. Could the wiring be the problem? I replaced the trim tab switches and get nothing. If it's the problem, where can I get a duplicate fuse panel for a 2002 MA 21? Link to comment Share on other sites More sharing options...
Grant Posted January 30, 2017 Report Share Posted January 30, 2017 Do you have power to the engine ? Get a circuit tester or multimeter, only about $10. Check the main battery selector switch if one is installed. Make sure it is set to the proper position and functioning properly. Check/clean connections. Check for power coming into the fuse box. Double check/clean both main terminal connections at the box AND the battery. A battery cable can corrode inside the insulation rendering it useless. A bad connection or corroded lead would be the most likely. If your GPS is wired correctly, it is probably wired direct to the battery, bypassing the fuse box. If the bilge has an automatic mode AND is wired correctly, the auto mode bypasses the fuse box. It would be unusual for a fusebox to go "bad" without physical damage. If you do need one they aren't that expensive. You can get one as small or as large as you need: https://www.amazon.com/Blue-Sea-Systems-Blade-Block/dp/B001P6FTHC/ref=sr_1_1?ie=UTF8&qid=1485808773&sr=8-1&keywords=marine+fuse+block Link to comment Share on other sites More sharing options...
Wanaflatsfish Posted January 31, 2017 Report Share Posted January 31, 2017 4 hours ago, Grant said: Do you have power to the engine ? Get a circuit tester or multimeter, only about $10. Check the main battery selector switch if one is installed. Make sure it is set to the proper position and functioning properly. Check/clean connections. Check for power coming into the fuse box. Double check/clean both main terminal connections at the box AND the battery. A battery cable can corrode inside the insulation rendering it useless. A bad connection or corroded lead would be the most likely. If your GPS is wired correctly, it is probably wired direct to the battery, bypassing the fuse box. If the bilge has an automatic mode AND is wired correctly, the auto mode bypasses the fuse box. It would be unusual for a fusebox to go "bad" without physical damage. If you do need one they aren't that expensive. You can get one as small or as large as you need: https://www.amazon.com/Blue-Sea-Systems-Blade-Block/dp/B001P6FTHC/ref=sr_1_1?ie=UTF8&qid=1485808773&sr=8-1&keywords=marine+fuse+block all good advice.. check the connection to the fuse panel....most likely your ground (black) wire could be just slightly loose....or you have a fuse going to the panel....in line that could be bad or blown.. check all the ground connections to the battery... DC Link to comment Share on other sites More sharing options...
imsnookyrd Posted January 31, 2017 Report Share Posted January 31, 2017 There should be a fuse back near the battery that supplies power to the fuse panel, could be blown. Link to comment Share on other sites More sharing options...
Convertible13 Posted February 1, 2017 Author Report Share Posted February 1, 2017 Thanks for the help. I'll go back and try again using what you told me. Link to comment Share on other sites More sharing options...
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