- 1). Read the owner's manual of the vehicle or contact the dealership to find out what size connection ports for the cooler lines are used on the vehicle. Purchase nuts and a flare nut wrench of the same size.
- 2). Turn on a flashlight and go beneath the car to locate the identical round ports on the bottom of the radiator and the passenger-side of the transmission. These vary in size depending on the vehicle but are normally about 3/8 to 1/2 inch.
- 3). Fasten a nut onto each end of the steel, braided hose. Run the hose from the transmission port to the radiator port.
- 4). Place the flare nut wrench on the nut and twist it to tighten it until it meets slight resistance.
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