We attached our mounting straps to the trans cooler and drilled two holes in the core support and in the top of each strap. After bolting the straps to the core support (using nylon locking nuts to keep the bolts tight), the cooler was plenty secure. We wired up the coolers fan to a 30-amp relay and mounted a switch under the dash (although Perma-Cool recommends running the fan at all times). Keep in mind that the motors polarity must be reversed in this mounting orientation so it pushes air through the core. Attach the black lead to +12V; red goes to ground.