Originally Posted by thomsonr
2010 21ss. During the last safety inspection our local dealer replaced the break away switch and I'm wondering if they did something else inadvertently. I will check out wmtires comment/link tomorrow.
The break-away switch, if inadvertently pulled, will drain the battery quickly.
If your rig sat for long at the dealer's service department waiting to get a new switch, the battery may have completely discharged and sulfated.
If the trailer hasn't been on power (that would allow the battery to re-charge if the converter is on), there's no guarantee the battery is any good.