peugeot partner 2006 1.9d 1868cc..battery light stays on?

Hi all i fitted new alternatior. Now battery warning light stays on after starting engine it is charging ok as i have tested it . Also now the heater is not working . the wipers are not working dash lights come on for a little while then go off if i turn off the key and on again dash light will come on and off after min or two but no move from wipers or heater any help will be thankfull thanks in advance . john