Yep, actually the Fasse Valve would be quite a bit easier to install. I have looked at the manual for the 2nd remote install, and while it is well within the capability's of a mechanicaly minded individual, I think the Fasse valve would encompass a much larger set of "shade tree mechanics" than the original. Also as it is priced, you could come close to getting another valve for the price of the OEM unit. And due to its stackablbility you, you could have a total of 4 remotes while the OEM only allows for two. Also you could easily demount the Fasse valve stack from the back of your tractor and take it with you for the next tractor, and be left with the single OEM remote as it comes from the factory. There is no modification of the original remote. The new valve stack just "plugs in" to the original OEM remote.
Just something to consider.