I was wondering if anybody has got a diagram or knows the locations of the vacuum hoses for the Pierburg Zenith 2B4 carb fitted to a 1981 316.
I have come across the following diagrams but one of them shows a distributor vacuum unit with 2 inputs where mine only has one.

There are also 2 output on the carb shown below, but I'm not sure which one goes where!

Any help would be greatly appreciated!!
Thanks
Tim