I wired in a reversing camera. There's quite a few options available but after the fact ( fitting one) I think the Halfords one is probably the best and If I need to replace I will buy that version. It's easy to install, 12v socket plug for camera screen and picks up live at rear for camera from reversing light and earth from mounting bracket of same. Comes on when reverse selected and has guide lines for accuracy on the screen. Also has an option to fit a forward facing camera and is selectable on the switching on the internal screen. I mounted the screen on a 17mm ball stick on bracket centrally under the dash on the plastic trim..... all Morgan's not the same here though!
It works really well, I have a difficult manoeuvre into the garage I keep it in and as you know the door mounted mirrors although ok out on the road are fairly useless when tight manoeuvring is required. The car is also wider at the back than the front so you can't line the side of the car up with say a lift or wall as it will drive out of square. The guide lines on the screen let you keep the car straight as you reverse!
Shop around and you can get one for £100.