identifying which SNPs sit in TFBS (Yeast)
I agree it can be extremely confusing sometimes to find the right data.

Do you know RSAT (Regulatory Sequences Analysis Toolkit) ?
If you go in "help &amp; contact", and "motif databases", you'll find the Yeastract database: http://rsat-tagc.univ-mrs.fr/rsat/motif_databases/Yeastract/

I thought it would also be on JASPAR, but couldn't find it.

Then for your analysis where you look for SNPs in the motifs, there is a tool on RSAT, that unfortunately works only with the Metazoa database right now, but you might be interested to check it out, and the corresponding paper: http://rsat-tagc.univ-mrs.fr/rsat/variation-scan_form.cgi