Originally Posted by
pdfbt40
Actually, if you check the Mondeo Mk3 wiring diagrams, you'll find the 12v feed is just an ignition on feed, not related to lights at all.
Thanks for that, it makes sense.
In the end I did use the radio illumination, not least because it was easily accessed and easier to scotch-lok onto.
Didn't bother with the reverse connection as I don't see it being a problem and I don't use the interior mirror when reversing anyway - I turn my head to look, and use the door mirrors for fine positioning against kerbs etc..