[one trick phoney]

I seem to have a gob full of 'teething troubles' right now - just went to start the old girl ('82 200 5e) and no response from the central locking. aha - flat battery I thought (fitted radio over weekend) - but no, car starts fine. When I get the boot open I can hear that the central locking pump is going nuts (strained sort of whining). Disconnect/rconnect - no change. Anyone know where I could source a replacement (nothing on GSF or Euro carparts) - is it common with any other models - could i 'jury-rig' another one thats not exactly the same - assumimg they all work on the same principle. Any advice gratefully recieved - i'd love to get up to 'cosford before christmas!