Windscreen wiper

[Ted]

Hi one and all,i am putting a help message here from a mate of mine,he has a computer but can only read whats there but cant put up messages???what he is looking for for his box 7 a little spring in the wiper motor the spring keeps pressure on the brush,he only has the one spring,he has exhausted all his contacts and was told "never had the need to renew one"so do you know where he might buy one,(spring) or someone who has a spare,i havent seen the spring myself but he describes it as about,5/8" long by about 1/8" diameter with a little hook at one end and a flat bit like a tail at the other end,he said if needed but he would but a motor if the price isnt over the top.
If you can help you can me an email to. tedeston734@gmail .com  thank you.Ted