1969 vacuum hose
I have a '69 big block coupe. There is a vac hose that has been cut off at firewall between heater core and ww motor. It comes from heater box under dash. My question is what vac line should I splice this into? The only vac I am using is headlights,headlight switch,headlight pull valve under dash,and heater controls.... No wiper door,or devices,has all been disconnected, using long hood.... Thank you for your time, Don.