Hi, When removing the right side Lucas aux long range lamp on our 1973, I unfortunately lost the nut. And it has turned into a somewhat nightmare to locate a new one when living in a metric country, where very few knows about inches and British/American measurements. I measured the bolt to be approx. 11.12 mm thick and hence think its a 7/16". Now, I tried 7/16 UNF, BSF, differet metric nuts, but none of them seems to fit and UNC seems to be too coarse....Would be grateful for any advise to which nut I need and where I can get one. Pls see attached photo. Cheers Finn
