Need Help Attaching Double Trailers.

[Piston Pusher]

I've come across two Mods for 18 WoS Haulin' (see pix) that show Double Trailers attached. But when I download them into the Mod folder of the game, they list as separate trailers when you go to buy them in the game and I have not found a way to attach them together. The lead trailers have a fifth wheel in the back but I have not found a way to make them appear 'on the street' together for hooking together. If anyone knows the secret I would sure appreciate a come back. Thanks.

Mack Super Liner and Trailer



Kenworth T600 plus bTrain