Hey...line....The wiring on a 3.7 pipe mod is about as simple as it gets....
+ battery -.......switch.......- connector>+connector.......+ battery .......= wiring (or the other way around)
If you are going to use a auto switch, you will need some kind of cap.... magnets,screw-on?....go on the web to "Steam Train Mods" and look at how he used magnets,and a swing arm, on his caps....also I believe someone used a wind screen for a cap..?
As for the stems....find some straight-sided delrim drip tips,and epoxy them in the stems..?
Line....keep looking....you will find it.....
duckie..........