High Voltage drop to slide motor

My fifth wheel setup has a slide out as well and there is a couple of RELAYS mounted close to the battery and have cables going many feet away from the slide motor. This is what sends the 12VDC to slide motor when you operate the switch inside the trailer. I sometimes had to jumper my trailer battery with my truck jumper cables to make the slide motor work better... After looking around I found those connections for the long cables going to the slide motor were not tight and was getting hot on me...

Cleaned up all of the connections and re-tightened every thing up and all is back to normal again...

Roy Ken