Daf cf55 refuse lorry engine check light ?

I have a daf 02 cf55 refuse lorry ,the ignition key had broke so we dismantled the ignition switch ,we tried to bridge the wires from the back of the switch but no progress in getting it started .We also noticed the engine check light (red)was on ,could any of these wires were joined wrongly cause this problem ,if not what does causes engine red check light ?