I just did mine...sprung for the Coleman Mach digital that KMP44 suggests. As stated just swap the wires, color for color and the nice thing is the Coleman digital is the same size as the analog with mounting holes at the exact same spot, so no need to drill new holes in the very thin trailer walls. I also did as suggested in another thread here, and put some insulation in the hole of the trailer wall that the wire runs through. That way the trapped hot or cold air in the wall cavity can't give the stat a false reading, thereby hoping to make it more accurate. Best price I found on the Coleman digital was on Amazon.
By the way Stormrider...I like your FD retired logo...4 more years and I can display as well.
2011 GMC Sierra 2500HD
2014 Rockwood 8289WS, Diamond Pkg.