No power

[jk300bh]

Hello.
I have a 2015 sunset trail ultra lite 300bh. I'm plugged into power at my house. Everything works except my Jensen Stereo and also my RV Comfort Colman Mack thermostate. I did check my fuses and my 20amp fuses were blown. Now there the reverse polarity fuses. I did hook my battery's up back wards and have corrected them. I put in new 20amps. I did check my 15 amps and everything good there. I flipped off and on my breaker switches. I still have nothing. Any thoughts???

[Burgy]

As I recall the radio has a fuse inline with it power. You have to pull it out to replace it.

Check GFCI outlets, any tripped?

[mark5w]

Sometimes there's a fuse in the thermostat also.

[jk300bh]

There were fuses in behind the stereo and thermostate. So they blew also when I reversed hook up the batteries. Now they must not go through the reverse polarity fuses in the panel. They must always run on battieries and not switch to 110 when plugged in like when the lights etc does.

[harley]

Like I always answer these problems, PAINT the positive end of the wire with red nail polish or paint.Or even red tape That way you will always remember which wire is positive..