Need Trailer Help!!!!!

I'm getting ready for my first trip of the year with mt camper and come to find my slide out won't operate...
My travel trailer is a 2012 26' zinger 1 slide out.

I pulled the motor and checked it on a fully charged battery and the motor spins but when hooked back up to the trailer it wont work??

I check for 12dc at the switch i have it...I checked the wires to the motor and have 12.DC also but it will not run???

I'm a service tech so I'm familiar with fixing stuff but this one got me stumped..

Any help would be great

never mind i figured it out lol was a bad positive connection on a relay block

well i think youll be safe this time out.........kinda late for snow this time of the year......good luck smitty