Turns out the lights were on as I dropped ratchet when loosening top alternator bolt hit the live and earthed on alternator so blew main alternator fuse also the squeek was waterpump
as title says need the part number for waterpump the press on type pulley one the one i got is fouling the waterpump housing when the bolts are tightened
When I fitted the other alternator yesterday the cat warning light came on and battery one so I swapped back to original alternator and it still has the lights on now any ideas