Further thoughts Dave (I seem to be saying this a lot
) The three wires you showed in close up appear to be a blue/yellow and two red/orange. If so then note the two similar colour ones both come from the same bombtail and are both live when side or headlamps selected. You of course only need two wires to fog switch so the second red/orange would remain redundant. I think we have to accept the nature of termination of these fog light wires as female spade connectors is an undocumented variation in the published schematics but it makes little difference to their function.
The blue/yellow colour is used exclusively for front auxiliary lighting so that wire will feed to front. It would be a simple task to check fog light function with a jumper between the two under dash fog wires once they are hooked up to your lights at the front. You would just need to source and fit a simple illuminating toggle switch then. Let us know of progress.
That's my plan Richard, my next step has to be to remove the wheel and find the wires in the O/S wheel arch, I can then hook up my fogs and ground them.
Currently everything points to adding an additional auxiliary switch which is a shame as I would prefer to use an existing one if possible, however, when I looked up the back of the dash to see the back of what we now know is the rear fog light switch, the whole set of switches in the panel were completely obscured by the PCB, this again pushed me back again to the idea of needing to add an auxiliary switch.
But where to fit said switch?
I’ve just taken a look online to look at Plus 4s of the same year for sale that are also fitted fogs/driving lights, my hope being I could look at the dash photos and find an auxiliary switch, I found this 2011 Duratec Plus Four with what look like Wipac driving lights.
https://www.williamsautomobiles.com/morgan/current-stock/15242436-morgan-plus-4-2.0-duratec/But despite closely scrutinising all the interior photos I can't see a single auxiliary switch
