have fitted a mercruiser 4000 gen 11 panel mount throttle/shift control,this has only 1 rocker switch for tilt and trailer,for down one dot on switch,for up and trailer has 2 dots on switch,now is the first press of switch for tilt and second for trailer,or vise versa,the instruction book that came with it makes no mention of it,[the old unit had 2 switches,tilt and trailer]