Aftermarket Rear Door Glass De-Mister

I can't seem to find this on here, so I will ask...

The rear door for my 110 CSW has no rear demister/defogger in it.

I have tried looking online for an aftermarket pack that I can stick on and wire in, but I have only been able to find one example of this, and that was from Australia .

Do any of you helpful people know of an aftermarket kit that I can buy so I can actually use my rear view mirror?

I have even looked at getting a replacement door with the required rear demister, but that was silly money!!!

All help gratefully received.

MTC3469H Rear safari door glass - heated
thats the glass then all you have to do is wire it in(with a fuse and a switch)