As said red light by clock is for FORD alarm/immoby.
They should certainly stay on longer from what I remember of the one I had about 8/12 seconds.
I always used to give my one two goes on the glow plugs, and this helped immensely, until I used MILLERS diesel cleaner stuff, then it was so much better, did not help as the moron who had it before me fitted a festa 950 battery, so I put in a early tranny diesel one instead.
tabetha