Originally Posted by sivamr
Yesterday I replaced the battery on my 2017 Sunset Trail and while changing the battery there was a spark and realized I had the polarity reversed while connecting the terminals. Connected the terminals right this time (red:+ve, black: -ve), went in checked the breaker board and ended up replacing one 20 amp fuse. Rest of 20 amp fuses and 15 amp fuses looked ok. Still, the radio/entertainment system wont come on, the microwave is off as well. Air conditioner thermostat is on displays the current temperature(90 deg) and when I set it cool (75 deg) it does not kick off the air conditioner.
Anyone had seen this before? If so what should I do to fix?
I've had fuses that look just fine that actually don't work (DC Side only). Get a multi-meter and check for either:
1. Power on both sides. Your DC should show 12 VDC on both sides.
2. Continuity (ohms) across the fuse. It should be very low or 1 ohm.
If you have power at the breaker box then go to the radio and find the power wire. Check for 12 VDC there (unless it's a 120 VAC power).
1. If you don't have power start working your way backward. Hopefully you find a fuse.
2. If you have power behind the radio you probably have a problem with the radio.