I heat up the brake line press it over the nipple of the 3 bar and let it cool. it will be on there like a rock. you will have to cut it off to remove it. Also for fittings i use http://www.globalindustrial.com/c/pneumatics/pneumatic-couplings-fittings/quick-connect-couplings
for hose. so far i have ordered from several places. As of right now the best quality hose i have goten is from
http://www.airridefittings.com/store/index.php?main_page=shopping_cart
and the hose is MADE IN THE USA
hope this helps
I did that to put it on the hard vac lines but I used a compression fitting on the MAP and wastegate actuator