The TF-1 uses a 12VDC blower with the New 2007 Kewl Konnect Feature which provides a better sealed Track Fresh Carbon Monoxide Filter enclosure. The blower uses a 3" inlet and should be provided with a 3" NACA duct connection. Most drivers use the right side A post to mount the NACA duct while mounting the blower on a cross member of the roll cage so that the unit is surrounded by ambient air and not in direct contact with a heat source. The closer that you can mount the unit to the driver the better it is to reduce air flow loss of long lengths of hose.