I did some research and found that late 90's Contours came from the factory with a 40 amp relay for the low speed fan and a 70 amp relay for the high speed fan. Also, BMW used two dual temp switches that would work. They have two to chose from depending what temp you want to work: 80 / 88* C (176/190*F) dual temp switch Part # 61318361787 91 / 99* C (195/210*F) dual temp switch Part # 61311378073 No need to track down aftermarket parts.
the...dual temp switches...make sure they turn the low side off when turning the high side on...when used with relays on a Taurus fan swap you will also need the pigtail that goes with the sender...the senders will be...metric threads... M12X1,5
if they are both on at same time...it will be great for a... Taurus fan swap...with a Volvo relay...:Handshake
I found this article where the guy runs a Lincoln fan, BMW switch, and Volvo relay with no problem. http://www.gmtruckcentral.com/articles/markviii.html