The problem is your picture, it's too small to identify your style compressor.
![biggrin](http://soda-machines.com/discussions/Smileys/smc/biggrin.gif)
If you have the early model 39 I believe they were different, does that thermostat and relay share the same box?
But if so, how did you install your t/s? Anyhow, the 3 in 1 would still need to be mounted directly to the side of the compressor but you will not use those slip-on terminals, rather you will need to cut them off and install ring terminals
then wire them in the same order as shown in the video.