Located on the side panel a few inches above the rear heater controls of my niece's Freda, is a small green indicator light - looks light a dashboard indicator light as found in 60's cars.
Although a neat item, it doesn't look original fit. I even saw it lit up once, but can't remember why...
I'm pretty sure I tried switching the dashboard 'rear heater isolator switch' on to see if that was it, and had the rear heating running too, but the rear heating was on ok but the green light wasn't. (Unfortunately, I don't have the car any more to double check; niece finally came and took it away & it now resides in Edinburgh
)It just occurred to me I hadn't worked out what this light was for, and thought I'd ask on here - even with the limited info I can give.
Thanks for any suggestions!
I hope you've told your niece to join the club & forum 
