Morris Minor Owners Club

I bought a stick on heated window element and kit from ebay some years ago. It must have been quite old because the box it came in had a lovely picture of a Volvo Amazon on it!
It has stopped working. The terminals have 12v when the switch is turned on, but the element does not warm up. I suspected the connection near one of the terminals, and have painted everything with silver repair paint, but it is still not working.
I would like to buy another one...but have not seen one like it for sale on ebay since this one about 9 years ago.
Is there a modern equivalent?
Thanks
John

Actual real heated rear windows with heating elements embedded within the glass are available and not too expensive.
Mine came from "the usual suspects".

Thanks alec. I forgot to mention that the window is fitted to my other classic, not my minor.