Block off the tranny intake lines to the radiator. The two lines for the trans cooler run directly from the trans to the cooler without tapping into any other line. Essentially, if you have a cooler, there is only two lines (3/8") that run to trans to cooler.
Line out from trans to intake of cooler. Line out from cooler to trans.
No more, no less.
If in doubt, there should be an instruction sheet with the cooler.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.