Thanks Richard. It turns out that we had the feet upside down ! After correcting them the 156 was safely recovered. What I am wondering now is whether the wishbones will now need to be replaced ?I think the question the OP was asking is how to fit the A-frame to the car......the "feet" of the "A" go up against the bottom wishbones - the curved swivels go over the wishbone and the chains go over the top then back under the wishbone and into the brackets on the ratchet straps.....the phrase to remember is "you pull on the chain and brake on the frame"...ie when the towcar and frame are pulling the towed car its the chain doing the work, when you brake the towing car the towed car is braked against the feet of the "A". If you have an A-frame with a braking system there will be a device operated by the over-run brake which is attached to the inside of the car to push on the car's service brake...I haven't seen one in operation but I have severe doubts about there effectiveness. I've towed thousands of miles with a non-braked A-frame, and never had a problem (one traffic copper commented on my "unbraked trailer", but only muttered about me technically being required to travel at lower speeds)...nor have I ever heard of anyone who has had an issue, but I have no doubt that with the increasing petty-mindedness of our policing authorities there will be some who will seek to ban their use.