That looks like the one, Almost. The ones I use are white without the plastic divider between the "lock-up" terminals. This is the "exact" one I use
http://www.autopartswarehouse.com/sk...h/ACD850A.html
Im not saying the "black body" brake switch wont work! Just not familiar.
Go to a wreaking yard & get a original style connector for the "lock-up side" of the brake switch, Most mid 80s GM vehicles used this brake switch....Including Olds, Buick, Cadillac & Pontiac.
DO NOT use part store "spade connectors".