My car failed the nct last week due to the wiper linkage being worn. The guy pointed at the point where the wipers attach to the car and said i needed new linkage. My boyfriend bought a new linkage from a scrapyard. I was surprised when i saw it as the whole device goes under the bonnet. Anyway he changed it for me and i'll bring it back to the nct centre tomorrow, the wipers look exactly the same. Just wondering, does this sound like i got the wrong part?