No power to slide out

[Hassy]

I'm trying to troubleshoot an electrical issue. I have no power to the slide out from the factory connections. I replaced the control board and I know the switch works. I'm able to get it to work if I run wires from the control board to a 12v battery inside, but the wires coming through the floor have no power. I've checked all the fuses and breakers in the panel. I'm looking through the junction box in the front behind the batteries but I don't see anything out of the ordinary there except for a random yellow wire that was in the bundle of all the white and black ground wires, but it doesn't look like it was meant to be attached to anything? All the other wire nut connections seem fine. I used contact cleaner on everything and made sure the wire nut connections were all good. I'm at a loss.

[franktafl]

Check for an in-line fuse/breaker.

[Witt84z]

If the camper 12V battery has a bad cell some things, including the slide, will not work. But the interior lights will work. To check you will need to disconnect the battery from the camper. Use a battery tester or attempt to charge the 12V battery using a 10 amp charge cycle. The tester will tell you right away. If you don't have a tester, use a battery charger and if the battery is bad it'll tell you after it attempts to charge the battery.

[videoarizona]

My slide out is on the same circuit breaker as the chager/converter. 2nd wire at the breaker. Check to see if that's disconnected or loses. Check the white wire at the converter. Stranger things can and have happened in the rv world....