Can I convert my spot lights to indicators

[Yung Man]

I have a BMW E34 saloon, one of my spot lights is knackered so I'm thinking of buying 2 new spot lights and 2 clear indicator lences with silver bulbs(flash orange), I never use my spots but would like the idea of running at night with them switched on but with a small 5 or 10 watt bulb in it so it looks like a side light.
My problem is if it's a spot light is it still a spot light even with a side light bulb in it, legally, what I could do is buy new spot lights get the wiring altered so the become indicators, stick a silver (orange flashing) bulb in it then put 2x10 watt clear bulbs in the new clear lenses that used to be indicators.

There is an E34 here showing the it from the front, does anyone know whether it would pass its MOT like this.

http://www.bmtown.com/about%20us.htm