ive wired my alternator up now but when i start the engine up the battery light stays on also it is drawing voltage from the battery whilst the engine is running, do i need a new alternator now?? or is it something ive done
many thanks

 

with engine on idle switch on rear heated window, lights and operate leccy windows - this will put a load on the alternator and you should hear the engine note change as idle decreases slightly. I would say if you hear no change then the alternator has failed.

The proper way is to measure voltage at the battery with engine off, you will get about 12v, with engine running you will see 13.5v ish, but I realise not everyone has a multimeter to hand for this.

 

i checked what you said with the windows and i cldnt hear no change , i also checked the battery with the engine off it was 12.7 and with the engine on it was 12.4 so i shall try a new alternator, can it be any mk4 escort alternator or does it have to be a rs turbo alternator
thanks