series or parallel?

Parallel 

Personally I would wire in parallel, it's much easier to trouble shoot.  If you wire in series and one bulb goes out poof the're all out.  It's the old Christmas tree light problem

You would need 70 volts to wire 5 in series at 14 volts; parallel is the answer.

@John H posted:

You would need 70 volts to wire 5 in series at 14 volts.

So how does he get 70 volts to do so?

Kidding!  As others have already said, parallel is the answer.

-Dave

Definitely parallel.

Bryce 

@Dave45681 posted:

So how does he get 70 volts to do so?

It would of course be easier to wire nine 14 volt bulbs in series to use the more readily available 115-120 volts. A big no-no though to mix into the train platforms.

Yes, hence the winking smiley and saying I was kidding.

Didn't want to mention that approach directly since there is always a risk some one may say "Hey, that's a great idea, I should try it just to see what happens!".

-Dave

"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"

- The Quarterly Review of London (1825)

Sorry, off-topic, but as an old telephone repairmen, I like this one:

"Well informed people know it is impossible to transmit the voice over wires and that were it possible to do so, the thing would be of no practical value."

-   Editorial in the Boston Post (1865)