At the front end, regardless of No 1 or 2 end, it would have both marker lights on at the top and one headlight on, either day (right hand light, i.e. nearest one to oncoming trains) or night (left hand light, i.e. nearest one to the cess).
This website might be of use: http://www.traintesting.com/Class_89.htm
Some Flickr pictures with day and night headlights and 2 x marker lights on:
Night head light:
Class 89 by midland.road, on Flickr
Day headlight:
Class 89 by midland.road, on Flickr
Night headlight:
Class 89 89001 by Wildmoreway (http://www.ipernity.com/doc/300665)[/url], on Flickr
Tail lights:
Class 89 by midland.road, on Flickr