Sorry I can't take pictures,but I'll try and explain it again.When you push the red button down and pull the brake lever it engages another lever under the brake lever.So what you want to do is keep this lever engaged all the time.The wedge fits between the reverse lever and holds it engaged.The slot cut in the wedge is for clearance to fit over the cable. There's a rubber boot over the left brake lever,roll that back and engage reverse a few times and I think you'll understand what I'm trying to say.