It's a safety issue and must be repaired correctly 100% or you are endangering your life and others. Is it a flexible rubber line out to any of the wheels or a solid metal line that is leaking? There is a company that independent auto repair shops buy their information from that the same information inexpensively to do it yourselfers. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. and get an online repair manual subscription. If it is a metal line the line will need to have the correct flare end made and brakes then "bleed" to get air out of the system.