Hey Pedro, Seats look good! about the latches, mine are a bit different than yours so I'm not even sure what benz model mine came from, one of mine also has the child safety switch on it, I permanently disabled it so that it would never engage. Anyways you can see how I routed my cable and you may need to go to a R/C hobby shop to get parts to make a mini linkage, i.e. threaded rod, ball hitches and ball joints, and used scrap metal to fabricate more linkage.