Fittes an SX bumper to my Uno Start back in 2005.
I got the fog lights working before the next MOT as I thought it would fail if they were fitted and didn't work lol.
There was no loom on the Uno. I used a relay (got a kit from Frauds and the wires fell off the conneectors).
Initialey I had a rocker switch mounted on the dash where the clock blanking plate was on the base spec Uno.
The switch ilumination was way too bright.
Eventualley I fitted a front fog switch button as found in Unos which have front fogs, and as I was running SX clocks for the taco, I wired in the on dash front fog idiot lamp too
.
Sorry I can't remember which dash / switch pins I connected to, but it all seemed obvious when tracing back the wires / fitting the switch in place of the blanked switch for non fog unos.
The low power switced relay feed was taken from somewhere on the dash like a backlight / cig lighter bulb so the fogs would only work when the main lights were on.
EDIT. I seem to remember the switch input / output went nowhere on my Uno and I had to find a switched live to feed into the switch and take the output to my own relay
The high current feed to the relay went direct to the battery (via a fuse neat the battery).
Can't find a picture of them switched on - but it was a rarity as it's not often foggy